%0 Journal Article %A Takahasi, Sin-Ei %T On The Center Of Quasi-Central Banach Algebras With bounded Approximate Identity %J Canadian journal of mathematics %D 1981 %P 68-90 %V 33 %N 1 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1981-008-0/ %R 10.4153/CJM-1981-008-0 %F 10_4153_CJM_1981_008_0