@article{DE_1999_35_1_a4,
     author = {V. N. Gorbuzov},
     title = {Boundedness criteria for the number of possible compact hypersurfaces determined by differential systems},
     journal = {Differencialʹnye uravneni\^a},
     pages = {30--37},
     publisher = {mathdoc},
     volume = {35},
     number = {1},
     year = {1999},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1999_35_1_a4/}
}