@BOOK{ Book!D - 100982026,
AUTHOR = "/ (by) Paul L. Butzer and Hubert Berens",
TITLE = "Semi-groups of operators and approximation",
LIBRARY= "كتابخانه پردیس علوم (دانشگاه تهران)",
SUBJECT = "Banach spaces,Semigroups,Approximation theory,Integrals",
URL = "/book/100982026/Semigroups-of-operators-and-approximation/"}