TY - JOUR AU - A. V. Chakmazyan TI - A Norden normalized submanifold of $P_n$ with a parallel field of normal directions JO - Doklady Akademii Nauk PY - 1977 SP - 816 EP - 819 VL - 236 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1977_236_4_a8/ LA - ru ID - DAN_1977_236_4_a8 ER -