TY - JOUR AU - V. L. Berdichevsky TI - On a variational principle of statistical mechanics JO - Vestnik Moskovskogo universiteta. Matematika, mehanika PY - 1987 SP - 50 EP - 55 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/VMUMM_1987_4_a12/ LA - ru ID - VMUMM_1987_4_a12 ER -