TY - JOUR AU - V. A. Mirzoyan TI - Submanifolds with higher-order semiparallel fundamental forms as envelopes JO - Izvestiâ vysših učebnyh zavedenij. Matematika PY - 1998 SP - 79 EP - 80 IS - 8 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IVM_1998_8_a10/ LA - ru ID - IVM_1998_8_a10 ER -