Schaible, S.; Ziemba, W. T. Generalized concavity of a function in portfolio theory. (English) Zbl 0573.90006 Z. Oper. Res., Ser. A 29, 161-186 (1985). MSC: 91B28 26B25 90C90 90C25 PDFBibTeX XMLCite \textit{S. Schaible} and \textit{W. T. Ziemba}, Z. Oper. Res., Ser. A 29, 161--186 (1985; Zbl 0573.90006) Full Text: DOI
Avriel, M.; Diewert, W. E.; Schaible, S.; Ziemba, W. T. Introduction to concave and generalized concave functions. (English) Zbl 0539.90087 Generalized concavity in optimization and economics, Proc. NATO Adv. Study Inst., Vancouver/Can. 1980, 21-50 (1981). MSC: 90C25 26B25 90-02 90C55 PDFBibTeX XML
Schaible, Siegfried (ed.); Ziemba, William T. (ed.) Generalized concavity in optimization and economics. (Papers presented at the Proceedings of the NATO Advanced Study Institute Held at the University of British Columbia, Vancouver, Canada, August 4-15, 1980). (English) Zbl 0534.00022 New York etc.: Academic Press, a Subsidiary of Harcourt Brace Jovanovich, Publishers. XIV, 767 p. (1981). MSC: 00Bxx 90-06 PDFBibTeX XML