TY - JOUR AU - V. P. Belov TI - Groups of spacetime transformations and symmetries of four-dimensional spacetime.~I JO - Teoretičeskaâ i matematičeskaâ fizika PY - 1994 SP - 458 EP - 475 VL - 100 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TMF_1994_100_3_a11/ LA - ru ID - TMF_1994_100_3_a11 ER -