author = { Butzer, Paul L. AND Berens, Hubert },

title = { Semi-groups of operators and approximation },

publisher = {Springer},

keywords = { Banach spaces , Integrals , Approximate computation , Groups, theory of , Semigroups , Approximation theory , Approximationstheorie , Operatorhalbgruppe , Halbgruppe , Operator , Operatortheorie },

year = {1967},

abstract = {Literaturverz. S. [295] - 313},

booktitle = {Die Grundlehren der mathematischen Wissenschaften in Einzeldarstellungen ; 145},

address = { Berlin [u.a.] },

url = { http://slubdd.de/katalog?TN_libero_mab2 }