1. Quasiconcave programming;Arrow;Econometrica,1961
2. Pseudolinearity and efficiency;Chew;Mathematical Programming,1984
3. Second order characterization of pseudoconvex and strictly pseudoconvex functions in terms of quasi-Hessians;Komlósi,1983
4. Second order conditions of generalized convexity and local optimality in nonlinear programming: the quasi-Hessian approach;Komlósi;Studia Oeconomica Auctoritate Universitatis Pécs Publicata,1985
5. Pseudo-concave programming and Lagrange regularity;Kortanek;Operations Research,1967