TY - JOUR AU - V. A. Mirzoyan TI - Submanifolds with symmetric fundamental forms of higher orders as envelopes JO - Izvestiâ vysših učebnyh zavedenij. Matematika PY - 1997 SP - 35 EP - 40 IS - 9 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IVM_1997_9_a5/ LA - ru ID - IVM_1997_9_a5 ER -