1. Existence theorems and convergence of minimizing sequences in extremum problems with restrictions;Polyak;Sov. Math. Dokl.,1966
2. Strongly convex analysis;Polovinkin;Sb. Math.,1996
3. Fundamentals of Convex Analysis;Hiriart-Urruty,2001
4. Convex Functions;Roberts,1973
5. N. Merentes, K. Nikodem, Some remarks on strongly convex functions, Aequationes Math. (in press).