1. V.F. Demyanov and V.N. Malozemov,Introduction to Minimax (Wiley, New York, 1974).
2. S.-P. Han and O. Mangasarian, Exact penalty functions in nonlinear programming,Mathematical Programming 17 (1979) 251–269.
3. J.-B. Hiriart-Urruty and C. Lemaréchal,Convex Analysis and Minimization Algorithms, Parts I and II (Springer, Berlin, 1993).
4. J.B. Kelley, The cutting plane method for solving convex programs,SIAM 8(4) (1960) 703–712.
5. K. Kiwiel, A survey of bundle methods for nondifferentiable optimization, in:Proceedings, XIII International Symposium on Mathematical Programming (Tokyo, 1988).