TY - JOUR AU - McMaster, R. J. TI - Cotorsion Theories and Colocalization JO - Canadian journal of mathematics PY - 1975 SP - 618 EP - 628 VL - 27 IS - 3 UR - http://geodesic.mathdoc.fr/articles/10.4153/CJM-1975-072-6/ DO - 10.4153/CJM-1975-072-6 ID - 10_4153_CJM_1975_072_6 ER -