@article{FAA_1981_15_3_a2,
     author = {I. M. Gel'fand and I. Ya. Dorfman},
     title = {Hamiltonian operators and infinite-dimensional {Lie} algebras},
     journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a},
     pages = {23--40},
     publisher = {mathdoc},
     volume = {15},
     number = {3},
     year = {1981},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FAA_1981_15_3_a2/}
}