Bose-Einstein and Fermi-Dirac systems and reduced density matrices with nonzero boundary conditions
English version (Springer): Ukrainian Mathematical Journal 25 (1973), no. 3, pp 246-254.
Citation Example: Matviichuk K. S. Bose-Einstein and Fermi-Dirac systems and reduced density matrices with nonzero boundary conditions // Ukr. Mat. Zh. - 1973. - 25, № 3. - pp. 313—322.
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