1. A. Ben-Tal, E. Rosinger and A. B-I, A Helly Type Theorem and Semiinfinite Programming, pp. 127-135 in Constructive Approaches to Mathematical Models, Academic Press, 1979.

2. A. B-I, A. Ben-Tal and S. Zlobec, Optimality in Convex Programming: A Feasible Directions Aproach, Mathematical Programming Study 19(1982), 16-38

3. A. B-I and B. Mond, What is Invexity?, J. Austral. Math. Soc. Ser. B 28(1986), 1-9

4. A. Ben-Tal and A. B-I, Incidence Geometry and the Geometric Foundations of Convexity Theory, J. Geometry 30(1987), 103-122