TY - JOUR AU - A. F. Palistrant TI - Application of three-dimensional point groups of the $P$-symmetry to the derivation JO - Doklady Akademii Nauk PY - 1981 SP - 884 EP - 888 VL - 260 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1981_260_4_a26/ LA - ru ID - DAN_1981_260_4_a26 ER -