1. H. W. KUHN AND A. W. TUCKER, Linear inequalities and related systems. Ann. Math. Stud. No. 38, pp. 3–18. Princeton, 1956.
2. R. J. DUFFIN, “Infinite Programs, Linear Inequalities and Related Systems,” (H. W. Kuhn and A. W. Tucker, eds., pp. 157–170. Princeton Univ. Press, 1956.
3. K. FAN, A generalization of the Alaogul-Bourbaki theorem and its applications. Math. Z.
88 (1965), 48–60.
4. W. FENCHEL, “Convex Cones, Sets and Functions” ( Mimeographed ), Princeton, 1953.
5. K. S. KRETSCHMER, Programmes in paired spaces. Can. J. Math.
13 (1961), 221–238.