TY - JOUR AU - MAO, LIXIN TI - DING-GRADED MODULES AND GORENSTEIN GR-FLAT MODULES JO - Glasgow mathematical journal PY - 2018 SP - 339 EP - 360 VL - 60 IS - 2 UR - http://geodesic.mathdoc.fr/articles/10.1017/S0017089517000155/ DO - 10.1017/S0017089517000155 ID - 10_1017_S0017089517000155 ER -