TY - JOUR AU - V. M. Kopytov AU - I. I. Mamaev TI - Absolute convexity of certain subgroups of an orderable group JO - Algebra i logika PY - 1968 SP - 20 EP - 26 VL - 7 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/AL_1968_7_2_a1/ LA - ru ID - AL_1968_7_2_a1 ER -