TY - JOUR AU - Grigore Calugareanu TI - A useful category for mixed Abelian groups JO - Theory and applications of categories PY - 1999 SP - 81 EP - 90 VL - 5 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TAC_1999_5_a3/ LA - en ID - TAC_1999_5_a3 ER -