TY  - JOUR
AU  - I. A. Vakarchuk
TI  - Irreducible cluster expansion for the logarithm of the $s$-particle density matrix of a many-boson system
JO  - Teoretičeskaâ i matematičeskaâ fizika
PY  - 1977
SP  - 247
EP  - 261
VL  - 32
IS  - 2
UR  - http://geodesic.mathdoc.fr/item/TMF_1977_32_2_a7/
LA  - ru
ID  - TMF_1977_32_2_a7
ER  -