@article{VMUMM_1987_4_a12,
     author = {V. L. Berdichevsky},
     title = {On a variational principle of statistical mechanics},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {50--55},
     publisher = {mathdoc},
     number = {4},
     year = {1987},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_1987_4_a12/}
}