@article{FAA_1990_24_4_a5,
     author = {V. Yu. Ovsienko},
     title = {Contact analogues of the {Virasoro} algebra},
     journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a},
     pages = {54--62},
     publisher = {mathdoc},
     volume = {24},
     number = {4},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FAA_1990_24_4_a5/}
}