%0 Journal Article %A Dixon, P. G. %T Unbounded approximate identities in normed algebras %J Glasgow mathematical journal %D 1992 %P 189-192 %V 34 %N 2 %U http://geodesic.mathdoc.fr/articles/10.1017/S0017089500008703/ %R 10.1017/S0017089500008703 %F 10_1017_S0017089500008703