TY - JOUR AU - Lee, Cheng-Shyong TI - On Some Generalization of Inequalities of Opial, Yang and Shum JO - Canadian mathematical bulletin PY - 1980 SP - 71 EP - 80 VL - 23 IS - 1 UR - http://geodesic.mathdoc.fr/articles/10.4153/CMB-1980-010-2/ DO - 10.4153/CMB-1980-010-2 ID - 10_4153_CMB_1980_010_2 ER -