TY  - JOUR
AU  - K. S. Matviychuk
TI  - The mathematical description of quantum systems by the method of reduced density matrices of the canonical ensemble
JO  - Doklady Akademii Nauk
PY  - 1976
SP  - 318
EP  - 320
VL  - 227
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1976_227_2_a15/
LA  - ru
ID  - DAN_1976_227_2_a15
ER  -