1. Avriel, M. 1976:Nonlinear programming. Englewood Cliffs, New Jersey: Prentice Hall
2. Bitran, G.R.; Hax, A.C. 1979: On the solution of convex knapsack problems with bounded variables. In: Prekopa, A. (ed.)Survey of mathematical programming, pp. 357–367. Amsterdam: North-Holland
3. van den Bosch, P.P.J.; Lootsma, F.A. 1987: Scheduling of power generation via large-scale nonlinear optimization.J. Optimiz. Theory and Appl. 55, 313–326
4. Buys, J.D. 1972:Dual algorithms for constrained optimization problems. Thesis, Univ. of Leiden, The Netherlands
5. Dayde, M. 1986:Parallélisation d'algorithmes d'optimisation pour des problémes d'optimum design. Thèse, Institut National Polytechnique de Toulouse, France