@article{DAN_1967_175_4_a10,
     author = {A. M. Kogan},
     title = {Variation principles for kinetic theory equations},
     journal = {Doklady Akademii Nauk},
     pages = {785--788},
     publisher = {mathdoc},
     volume = {175},
     number = {4},
     year = {1967},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1967_175_4_a10/}
}