@article{DE_1997_33_10_a1,
     author = {V. N. Gorbuzov},
     title = {An estimate for the number of compact leaves of foliations defined by differential equations},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1307--1311},
     publisher = {mathdoc},
     volume = {33},
     number = {10},
     year = {1997},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1997_33_10_a1/}
}