Artykuły w czasopismach na temat „Disordered electron systems”

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1

W.S.B. "Electron-electron interactions in disordered systems". Journal of Magnetic Resonance (1969) 79, nr 1 (sierpień 1988): 219. http://dx.doi.org/10.1016/0022-2364(88)90344-7.

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2

Bozsoki, Peter, Imre Varga i Henning Schomerus. "Electron-electron relaxation in disordered interacting systems". physica status solidi (c) 5, nr 3 (marzec 2008): 699–702. http://dx.doi.org/10.1002/pssc.200777553.

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3

JANIŠ, V., i J. KOLORENČ. "CAUSALITY VERSUS WARD IDENTITY IN DISORDERED ELECTRON SYSTEMS". Modern Physics Letters B 18, nr 19n20 (30.08.2004): 1051–58. http://dx.doi.org/10.1142/s0217984904007591.

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We address the problem of fulfilling consistency conditions in solutions for disordered noninteracting electrons. We prove that if we assume the existence of the diffusion pole in an electron–hole symmetric theory we cannot achieve a solution with a causal self-energy that would fully fit the Ward identity. Since the self-energy must be causal, we conclude that the Ward identity is partly violated in the diffusive transport regime of disordered electrons. We explain this violation in physical terms and discuss its consequences.
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4

Blanter, Ya M. "Electron-electron scattering rate in disordered mesoscopic systems". Physical Review B 54, nr 18 (1.11.1996): 12807–19. http://dx.doi.org/10.1103/physrevb.54.12807.

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5

Castellani, C., C. Di Castro i M. Grilli. "Disordered electron systems with Hubbard interaction". Physical Review B 34, nr 8 (15.10.1986): 5907–8. http://dx.doi.org/10.1103/physrevb.34.5907.

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6

Fu-xiang, Han, Lin Jian-cheng i Zhou Guang-zhao. "On Localization in Disordered Electron Systems". Communications in Theoretical Physics 5, nr 3 (kwiecień 1986): 265–71. http://dx.doi.org/10.1088/0253-6102/5/3/265.

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7

CRUZEIRO-HANSSON, L., J. O. BAUM i J. L. FINNEY. "Electron States in Static Disordered Systems and Fluid Systems". International Journal of Modern Physics C 02, nr 01 (marzec 1991): 305–9. http://dx.doi.org/10.1142/s012918319100038x.

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The path integral formulation of quantum statistical mechanics is used to study the effect of structural disorder on the electron states at finite temperatures. The following systems are investigated: an excess electron in a) a perfect hard spheres crystal, b) a hard spheres crystal with a vacancy and c) a hard spheres fluid. The localizing effect of a vacancy on the electron equals that of a fluid environment.
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8

Grilli, M., i S. Sorella. "Matrix field theory for disordered electron systems". Nuclear Physics B 295, nr 3 (marzec 1988): 422–42. http://dx.doi.org/10.1016/0550-3213(88)90363-x.

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9

Castellani, C., C. DiCastro, G. Kotliar, P. A. Lee i G. Strinati. "Thermal conductivity in disordered interacting-electron systems". Physical Review Letters 59, nr 4 (27.07.1987): 477–80. http://dx.doi.org/10.1103/physrevlett.59.477.

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10

Kleinert, P. "Magnetoconductivity of Disordered Two-Dimensional Electron Systems". physica status solidi (b) 168, nr 1 (1.11.1991): 267–78. http://dx.doi.org/10.1002/pssb.2221680125.

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11

Markoš, P., i L. Schweitzer. "Disordered two-dimensional electron systems with chiral symmetry". Physica B: Condensed Matter 407, nr 20 (październik 2012): 4016–22. http://dx.doi.org/10.1016/j.physb.2012.01.087.

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12

Janssen, Martin. "Statistics and scaling in disordered mesoscopic electron systems". Physics Reports 295, nr 1-2 (marzec 1998): 1–91. http://dx.doi.org/10.1016/s0370-1573(97)00050-1.

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13

Pendry, J. B. "Quasi-extended electron states in strongly disordered systems". Journal of Physics C: Solid State Physics 20, nr 5 (20.02.1987): 733–42. http://dx.doi.org/10.1088/0022-3719/20/5/009.

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14

Srivastava, Vipin. "The case of disordered two-dimensional electron systems". International Journal of Quantum Chemistry 29, nr 5 (maj 1986): 1525–33. http://dx.doi.org/10.1002/qua.560290543.

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15

Suga, Sei-ichiro, i Takuma Ohashi. "Kondo Effect in Two-Dimensional Disordered Electron Systems". Journal of the Physical Society of Japan 72, Suppl.A (3.01.2003): 139–40. http://dx.doi.org/10.1143/jpsjs.72sa.139.

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16

Pande, Vijay S., i José Nelson Onuchic. "Electron Transport in Disordered Polymeric and Biological Systems". Physical Review Letters 78, nr 1 (6.01.1997): 146–49. http://dx.doi.org/10.1103/physrevlett.78.146.

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17

Kopidakis, G., C. M. Soukoulis i E. N. Economou. "Localization and electron-phonon interactions in disordered systems". Europhysics Letters (EPL) 33, nr 6 (20.02.1996): 459–64. http://dx.doi.org/10.1209/epl/i1996-00362-7.

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18

Belitz, D., i T. R. Kirkpatrick. "Quantum ferromagnetic transition in disordered itinerant electron systems". Europhysics Letters (EPL) 35, nr 3 (20.07.1996): 201–6. http://dx.doi.org/10.1209/epl/i1996-00554-7.

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19

Raimondi, R., P. Schwab i C. Castellani. "Nonlinear effects and dephasing in disordered electron systems". Physical Review B 60, nr 8 (15.08.1999): 5818–31. http://dx.doi.org/10.1103/physrevb.60.5818.

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20

Efros, A. L., i B. I. Shklovskii. "Influence of electron-electron interaction on hopping conduction of disordered systems". Journal of Non-Crystalline Solids 97-98 (grudzień 1987): 31–38. http://dx.doi.org/10.1016/0022-3093(87)90010-x.

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21

Arfi, Badredine. "Effect of electron-electron interaction on thermal conductivity of disordered systems". Journal of Low Temperature Physics 86, nr 3-4 (luty 1992): 213–29. http://dx.doi.org/10.1007/bf01151802.

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22

NEILSON, DAVID. "DISSIPATIVE PROCESSES IN LOW DENSITY STRONGLY INTERACTING 2D ELECTRON SYSTEMS". International Journal of Modern Physics B 24, nr 25n26 (20.10.2010): 4946–60. http://dx.doi.org/10.1142/s0217979210057122.

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A glassy phase in disordered two dimensional (2D) electron systems may exist at low temperatures for electron densities lying intermediate between the Fermi liquid and Wigner crystal limits. The glassy phase is generated by the combined effects of disorder and the strong electron-electron correlations arising from the repulsive Coulomb interactions. Our approach here is motivated by the observation that at low electron densities the electron pair correlation function, as numerically determined for a non-disordered 2D system from Monte Carlo simulations, is very similar to the pair correlation function for a 2D classical system of hard discs. This suggests that theoretical approaches to 2D classical systems of hard discs may be of use in studying the disordered, low density electron problem. We use this picture to study its dynamics on the electron-liquid side of a glass transition. At long times the major relaxation process in the electron-liquid will be a rearrangement of increasingly large groups of the discs, rather than the movement of the discs separately. Such systems have been studied numerically and they display all the characteristics of glassy behaviour. There is a slowing down of the dynamics and a limiting value of the retarded spatial correlations. Motivated by the success of mode-coupling theories for hard spheres and discs in reproducing experimental results in classical fluids, we use the Mori formalism within a mode-coupling theory to obtain semi-quantitative insight into the role of electron correlations as they affect the time response of the weakly disordered 2D electron system at low densities.
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23

Chang, L., i G. Y. Wu. "Coherent electron backscattering interference in non-uniform disordered systems". Physica B: Condensed Matter 406, nr 15-16 (sierpień 2011): 3036–41. http://dx.doi.org/10.1016/j.physb.2011.04.071.

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24

Punnoose, A. "Metal-Insulator Transition in Disordered Two-Dimensional Electron Systems". Science 310, nr 5746 (14.10.2005): 289–91. http://dx.doi.org/10.1126/science.1115660.

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25

Jeon, Gun Sang, Seongho Wu, M. Y. Choi i Hyun-Woo Lee. "Fluctuations of the inverse compressibility in disordered electron systems". Physical Review B 59, nr 4 (15.01.1999): 2841–47. http://dx.doi.org/10.1103/physrevb.59.2841.

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26

Ohtsuki, Tomi, i Yoshiyuki Ono. "Critical Level Statistics in Two-Dimensional Disordered Electron Systems". Journal of the Physical Society of Japan 64, nr 11 (15.11.1995): 4088–91. http://dx.doi.org/10.1143/jpsj.64.4088.

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27

Bronold, Franz X., Andreas Alvermann i Holger Fehske. "Anderson localization in strongly coupled disordered electron–phonon systems". Philosophical Magazine 84, nr 7 (marzec 2004): 673–704. http://dx.doi.org/10.1080/14786430310001624884.

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28

Brezini, A. "Effects of Disorder and Electron Correlation in Disordered Systems". physica status solidi (b) 166, nr 1 (1.07.1991): 125–34. http://dx.doi.org/10.1002/pssb.2221660113.

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29

Repetsky, S., I. Vyshyvana, S. Kruchinin i S. Bellucci. "Tight-binding model in the theory of disordered crystals". Modern Physics Letters B 34, nr 19n20 (8.07.2020): 2040065. http://dx.doi.org/10.1142/s0217984920400655.

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This paper presents a new method of describing electronic spectrum, thermodynamic potential, and electrical conductivity of disordered crystals based on the Hamiltonian of multi-electron system and diagram method for Green’s functions finding. Electronic states of a system were described by multi-band tight-binding model. The Hamiltonian of a system is defined on the basis of the wave functions of electron in the atom nucleus field. Electrons scattering on the oscillations of the crystal lattice are taken into account. The proposed method includes long-range Coulomb interaction of electrons at different sites of the lattice. Precise expressions for Green’s functions, thermodynamic potential and conductivity tensor are derived using diagram method. Cluster expansion is obtained for density of states, free energy, and electrical conductivity of disordered systems. We show that contribution of the electron scattering processes to clusters is decreasing along with increasing number of sites in the cluster, which depends on small parameter. The computation accuracy is determined by renormalization precision of the vertex parts of the mass operators of electron-electron and electron-phonon interactions. This accuracy also can be determined by small parameter of cluster expansion for Green’s functions of electrons and phonons.
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30

Maiti, Santanu K. "Quantum Transport in Bridge Systems". Solid State Phenomena 155 (maj 2009): 71–85. http://dx.doi.org/10.4028/www.scientific.net/ssp.155.71.

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We study electron transport properties of some molecular wires and a unconventional disordered thin film within the tight-binding framework using Green's function technique. We show that electron transport is significantly affected by quantum interference of electronic wave functions, molecule-to-electrode coupling strengths, length of the molecular wire and disorder strength. Our model calculations provide a physical insight to the behavior of electron conduction across a bridge system.
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31

KUZEMSKY, A. L. "ELECTRONIC TRANSPORT IN METALLIC SYSTEMS AND GENERALIZED KINETIC EQUATIONS". International Journal of Modern Physics B 25, nr 23n24 (30.09.2011): 3071–183. http://dx.doi.org/10.1142/s0217979211059012.

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This paper reviews some selected approaches to the description of transport properties, mainly electroconductivity, in crystalline and disordered metallic systems. A detailed qualitative theoretical formulation of the electron transport processes in metallic systems within a model approach is given. Generalized kinetic equations which were derived by the method of the nonequilibrium statistical operator are used. Tight-binding picture and modified tight-binding approximation (MTBA) were used for describing the electron subsystem and the electron-lattice interaction correspondingly. The low- and high-temperature behavior of the resistivity was discussed in detail. The main objects of discussion are nonmagnetic (or paramagnetic) transition metals and their disordered alloys. The choice of topics and the emphasis on concepts and model approach makes it a good method for a better understanding of the electrical conductivity of the transition metals and their disordered binary substitutional alloys, but the formalism developed can be applied (with suitable modification), in principle, to other systems. The approach we used and the results obtained complements the existent theories of the electrical conductivity in metallic systems. The present study extends the standard theoretical format and calculation procedures in the theories of electron transport in solids.
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32

Hsu, J. W. P., A. Kapitulnik i M. Yu Reizer. "Effect of electron-electron interaction on the thermoelectric power in disordered metallic systems". Physical Review B 40, nr 11 (15.10.1989): 7513–19. http://dx.doi.org/10.1103/physrevb.40.7513.

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33

Shegelski, Mark R. A., i D. J. W. Geldart. "Plasmons in disordered, two-component, quasi-two-dimensional electron systems". Physical Review B 40, nr 6 (15.08.1989): 3647–51. http://dx.doi.org/10.1103/physrevb.40.3647.

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34

Altland, Alexander, i Yuval Gefen. "Spectral statistics of nondiffusive disordered electron systems: A comprehensive approach". Physical Review B 51, nr 16 (15.04.1995): 10671–90. http://dx.doi.org/10.1103/physrevb.51.10671.

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35

Buth, K., i U. Merkt. "Quantum Hall effect in intentionally disordered two-dimensional electron systems". Annalen der Physik 11, nr 12 (grudzień 2002): 843–91. http://dx.doi.org/10.1002/1521-3889(200212)11:12<843::aid-andp843>3.0.co;2-z.

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36

Schwab, P., i R. Raimondi. "Quasiclassical theory of charge transport in disordered interacting electron systems". Annalen der Physik 12, nr 78 (29.10.2003): 471–516. http://dx.doi.org/10.1002/andp.200310024.

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37

Schreiber, M., i K. Tenelsen. "Relaxation effects in disordered many-electron systems with Coulomb interaction". Modelling and Simulation in Materials Science and Engineering 2, nr 5 (1.09.1994): 1047–64. http://dx.doi.org/10.1088/0965-0393/2/5/007.

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38

Klinger, M. I. "Glassy disordered systems: Topology, atomic dynamics and localized electron states". Physics Reports 165, nr 5-6 (sierpień 1988): 275–397. http://dx.doi.org/10.1016/0370-1573(88)90158-5.

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39

Reizer, Michael. "Electron-electron interaction effect on the conductivity and the Hall conductivity of weakly disordered electron systems". Physical Review B 57, nr 19 (15.05.1998): 12338–44. http://dx.doi.org/10.1103/physrevb.57.12338.

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40

Bergmann, Gerd. "Electron scattering by electron holograms: The physical interpretation of the Coulomb anomaly in disordered electron systems". Physical Review B 35, nr 9 (15.03.1987): 4205–15. http://dx.doi.org/10.1103/physrevb.35.4205.

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41

Portengen, T., J. R. Chapman, V. Nikos Nicopoulos i N. F. Johnson. "Optics with Quantum Hall Skyrmions". International Journal of Modern Physics B 12, nr 01 (10.01.1998): 1–35. http://dx.doi.org/10.1142/s0217979298000028.

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A novel type of charged excitation, known as a Skyrmion, has recently been discovered in quantum Hall systems with filling factor near ν=1. A Skyrmion — which can be thought of as a topological twist in the spin density of the electron gas — has the same charge as an electron, but a much larger spin. In this review we present a detailed theoretical investigation of the optical properties of Skyrmions. Our results provide means for the optical detection of Skyrmions using photoluminescence (PL) spectroscopy. We first consider the optical properties of Skyrmions in disordered systems. A calculation of the luminescence energy reveals a special optical signature which allows us to distinguish between Skyrmions and ordinary electrons. Two experiments to measure the optical signature are proposed. We then turn to the optical properties of Skyrmions in pure systems. We show that, just like an ordinary electron, a Skyrmion may bind with a hole to form a Skyrmionic exciton. The Skyrmionic exciton can have a lower energy than the ordinary magnetoexciton. The optical signature of Skyrmions is found to be a robust feature of the PL spectrum in both disordered and pure systems.
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42

Rao, C. N. R., i Ram Seshadri. "Phase Transitions, Superconductivity, and Ferromagnetism in Fullerene Systems". MRS Bulletin 19, nr 11 (listopad 1994): 28–30. http://dx.doi.org/10.1557/s0883769400048375.

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By virtue of their unique structures, fullerenes exhibit novel chemical transformations. Particularly pertinent to this article are the interesting properties exhibited by fullerenes in the solid state. These molecules are spherical or near-spherical in shape. Molecules with high point-group symmetry, which are not bound strongly in the solid state, tend to crystallize into structures with long-range periodicity of the molecular centers of mass, but the molecular orientations are random or even dynamically disordered. When dynamically disordered, themolecules rotate about some preferred axis. C60 and C70 satisfy the criteria for such orientationally disordered solids and exhibit rich phase behavior in the solid state. Since C60 has high electron affinity, it forms anion salts with alkali and alkaline-earth metals as well as with strong organic donor molecules. With tetrakis dimethylaminoethylene (TDAE), which is a very powerful electron donor, C60 forms a 1:1 solid that is ferromagnetic. C60-TDAE is the molecular organic ferromagnet with the highest Tc (of 16 K) known to date. Some of the alkali and alkaline-earth fullerides, on the other hand, show superconductivity, with transition temperatures going up to 33K. We shall briefly examine some of these solid-state properties.
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43

Lyanda-Geller, Yuli. "Quantum Interference and Electron-Electron Interactions at Strong Spin-Orbit Coupling in Disordered Systems". Physical Review Letters 80, nr 19 (11.05.1998): 4273–76. http://dx.doi.org/10.1103/physrevlett.80.4273.

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44

YANG YONG-HONG, XING DING-YU i GONG CHANG-DE. "EFFECT OF INTERSUBBAND IMPURITY SCATTERING IN TWO DIMENSIONAL DISORDERED ELECTRON SYSTEMS". Acta Physica Sinica 42, nr 1 (1993): 106. http://dx.doi.org/10.7498/aps.42.106.

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45

Nakano, A., P. Vashishta i R. K. Kalia. "Electron transport in disordered systems: A nonequilibrium quantum-molecular-dynamics approach". Physical Review B 43, nr 13 (1.05.1991): 10928–32. http://dx.doi.org/10.1103/physrevb.43.10928.

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46

Castellani, C., i C. Di Castro. "Effective Landau theory for disordered interacting electron systems: Specific-heat behavior". Physical Review B 34, nr 8 (15.10.1986): 5935–38. http://dx.doi.org/10.1103/physrevb.34.5935.

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47

Janiš, V., i J. Kolorenč. "Conservation laws in disordered electron systems: Thermodynamic limit and configurational averaging". physica status solidi (b) 241, nr 9 (lipiec 2004): 2032–42. http://dx.doi.org/10.1002/pssb.200404786.

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48

Ohashi, Takuma, i Sei-ichiro Suga. "Susceptibility of a Magnetic Impurity in Two-Dimensional Disordered Electron Systems". Journal of the Physical Society of Japan 71, nr 5 (15.05.2002): 1246–49. http://dx.doi.org/10.1143/jpsj.71.1246.

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49

Nattermann, T., S. Malinin i B. Rosenow. "Quantum creep and variable range hopping in 1D disordered electron systems". Journal de Physique IV (Proceedings) 131 (grudzień 2005): 161. http://dx.doi.org/10.1051/jp4:2005131038.

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50

Heinrichs, J. "Improved self-consistent theory of electron localization in weakly disordered systems". Solid State Communications 55, nr 1 (lipiec 1985): 71–75. http://dx.doi.org/10.1016/0038-1098(85)91108-1.

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