TY - JOUR AU - Takahasi, Sin-Ei TI - On The Center Of Quasi-Central Banach Algebras With bounded Approximate Identity JO - Canadian journal of mathematics PY - 1981 SP - 68 EP - 90 VL - 33 IS - 1 UR - http://geodesic.mathdoc.fr/articles/10.4153/CJM-1981-008-0/ DO - 10.4153/CJM-1981-008-0 ID - 10_4153_CJM_1981_008_0 ER -