1. Le Thi, H.A., Tao, P.D.: DC programming and DCA: thirty years of developments. Math. Program. 169(1), 5–68 (2018)
2. Toland, J.F.: Duality in nonconvex optimization. J. Math. Anal. Appl. 66(2), 399–415 (1978)
3. Hiriart-Urruty, J., Ponstein, J.: Generalized differentiability/duality and optimization for problems dealing with differences of convex functions. In: Convexity and Duality in Optimization: Proceedings of the Symposium on Convexity and Duality in Optimization Held at the University of Groningen, The Netherlands June 22, 1984, pp 37–70. Springer, Berlin (1985)
4. Bomze, I.M., Lemaréchal, C.: Necessary conditions for local optimality in difference-of-convex programming. Journal of Convex Analysis 17(2), 673–680 (2010)
5. Pang, J.S., Razaviyayn, M., Alvarado, A.: Computing B-stationary points of nonsmooth DC programs. Math. Oper. Res. 42(1), 95–118 (2017)