Researchr is a web site for finding, collecting, sharing, and reviewing scientific publications, for researchers by researchers.
Sign up for an account to create a profile with publication list, tag and review your related work, and share bibliographies with your co-authors.
Harold P. Benson. On the Construction of Convex and Concave Envelope Formulas for Bilinear and Fractional Functions on Quadrilaterals. Comp. Opt. and Appl., 27(1):5-22, 2004. [doi]
Abstract is missing.