TY - JOUR AU - A. M. Ivanov TI - Necessary conditions for the coperiodicity of quotients of direct products of Abelian groups JO - Matematičeskie zametki PY - 1984 SP - 921 EP - 926 VL - 35 IS - 6 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZM_1984_35_6_a15/ LA - ru ID - MZM_1984_35_6_a15 ER -