1. Variational inequalities, complementarity problems, and duality theorems;Allen;J. Math. Anal. Appl.,1977
2. Cones, Matrices and Mathematical Programming;Berman,1973
3. Quadratic forms semidefinite over convex cones;Cottle,1970
4. The linear complementarity problem;Eaves;Management Sci.,1971
5. Quasiconvexity and pseudoconvexity of functions on the nonnegative orthant;Ferland,1981