TY - JOUR AU - R. I. Pimenov TI - Necessary and sufficient conditions for the linearity of transformations which preserve cones JO - Matematičeskie zametki PY - 1969 SP - 361 EP - 369 VL - 6 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZM_1969_6_4_a0/ LA - ru ID - MZM_1969_6_4_a0 ER -