@misc{FPM_1999_5_1_a18,
     title = {VII {Winter} {Mathematical} {Workshop} {``Algebra} and differential equations''},
     journal = {Fundamentalʹna\^a i prikladna\^a matematika},
     pages = {315--317},
     publisher = {mathdoc},
     volume = {5},
     number = {1},
     year = {1999},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FPM_1999_5_1_a18/}
}