TY - JOUR AU - OUYANG, LUNQUN TI - ORE EXTENSIONS OF WEAK ZIP RINGS* JO - Glasgow mathematical journal PY - 2009 SP - 525 EP - 537 VL - 51 IS - 3 UR - http://geodesic.mathdoc.fr/articles/10.1017/S0017089509005151/ DO - 10.1017/S0017089509005151 ID - 10_1017_S0017089509005151 ER -