TY - JOUR AU - V. G. Kopp TI - On infinitesimal rotations in a six-dimensional pseudo-Euclidean space of signature zero JO - Trudy Geometricheskogo Seminara PY - 1981 SP - 49 EP - 56 VL - 13 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/KUTGS_1981_13_a5/ LA - ru ID - KUTGS_1981_13_a5 ER -