1. Linear programming in complex space;Levinson;J. Math, Anal. Appl.,1966
2. Dual systems of homogeneous linear relations;Tucker,1956
3. Theory of Linear Programming, in Linear Inequalities and Related Systems;Goldman,1956
4. Quadratic programming in complex space;Hanson;J. Math. Anal. Appl.,1967
5. Symmetric duality for quadratic programming in complex space;Mond;J. Math. Anal. Appl.,1968