1. D.P. Bertsekas, “Constrained Optimization and Lagrange Multiplier Methods”. Academic Press, New York, 1982.
2. F.H. Clarke, “Optimization and Nonsmooth Analysis”. Wiley, New York, 1983 (reprinted by SIAM, Philadelphia, 1990).
3. T. De Luca, F. Facchinei and C. Kanzow: “A semismooth equation approach to the solution of nonlinear complementarity problems”. DIS Technical Report 01.95, Università di Roma “La Sapienza”, Roma, Italy, January 1995 (revised July 1995).
4. R.S. Dembo, S.C. Eisenstat and T. Steihaug, “Inexact Newton methods”. SIAM Journal on Numerical Analysis 19, pp. 400–408, 1982.
5. J.E. Dennis, Jr., and J.J. Moré, “A characterization of the superlinear convergence and its application to quasi-Newton methods”. Mathematics of Computation 28, pp. 549–560, 1974.