References
- Avriel , M , Diewert , WE , Schaible , S and Zang , I . 1988 . Generalized Concavity , New York : Plenum Press .
- Ben-Israel , A and Mond , B . 1986 . What is invexity? . Bulletin of the Australian Mathematical Society , 28 : 1 – 9 .
- Karamardian , S . 1976 . Complementarity problems over cones with monotone and pseudomonotone maps. . Journal of Optimization Theory and Applications , 18 : 445 – 454 .
- Karamardian , S and Schaible , S . 1990 . Seven kinds of generalized monotone maps. . Journal of Optimization Theory and Applications , 66 : 37 – 46 .
- Karamardian , S , Schaible , S and Crouzeix , JP . 1993 . Characterizations generalized monotone maps. . Journal of Optimization Theory and Applications , 76 : 399 – 413 .
- Kinderlehrer , D and Stampacchia , G . 1980 . An Introduction to Variational Inequalities and Their Applications , New York : Academic Press, Inc .
- Mangasarian , OL . 1969 . Nonlinear Programming , New York : McGraw-Hill .
- Martos , B . 1975 . Nonlinear Programming – Theory and Methods , Budapest : Akademiai Kiado .
- Phu , HX and An , PT . 1996 . Stable generalization of convex functions. . Optimization , 38 : 309 – 318 .
- Roberts , AW and Varberg , DE . 1973 . Convex Functions , New York and London : Academic Press .