Functional analysis and approximation : proceedings of the conference held at the Mathematical Research Institute at Oberwolfach, Black Forest, August 9-16, 1980 - Butzer, Paul Leo, 1928-; Szokefalvi-Nagy, Bela, 1913-; Gorlich, E. (Ernst), 1940- (Basel : Birkhauser Verlag, 1981)
Keywords: Functional analysis; Approximation theory