TY - JOUR AU - V. N. Gorbuzov TI - Boundedness criteria for the number of possible compact hypersurfaces determined by differential systems JO - Differencialʹnye uravneniâ PY - 1999 SP - 30 EP - 37 VL - 35 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1999_35_1_a4/ LA - ru ID - DE_1999_35_1_a4 ER -