@misc{DE_1988_24_3_a0,
     title = {Konstantin {Sergeevich} {Sibirskiǐ} (on the occasion of his 60th birthday)},
     journal = {Differencialʹnye uravneni\^a},
     pages = {371--375},
     year = {1988},
     volume = {24},
     number = {3},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1988_24_3_a0/}
}