TY - JOUR SN - 0002-9939 UR - https://archiv.ub.uni-heidelberg.de/volltextserver/29062/ Y1 - 1976/03// EP - 346 PB - American Mathematical Society VL - 55 SP - 345 JF - Proceedings of the American Mathematical Society IS - 2 A1 - Leinert, Michael CY - Providence, RI ID - heidok29062 AV - public TI - A commutative Banach algebra which factorizes but has no approximate units ER -