TY - JOUR AU - K. S. Matviichuk TI - Mathematical description of the states of bose and fermi systems by the method of partial density matrices of the canonical ensemble JO - Teoretičeskaâ i matematičeskaâ fizika PY - 1979 SP - 346 EP - 367 VL - 41 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TMF_1979_41_3_a5/ LA - ru ID - TMF_1979_41_3_a5 ER -