1. Fletcher, R., Leyffer, S.: Nonlinear programming without a penalty function. Math. Program. 91, 239–269 (2002)
2. Periçaro, G.A., Ribeiro, A.A., Karas, E.W.: Global convergence of a general filter algorithm based on an efficiency condition of the step. Appl. Math. Comput. 219, 9581–9597 (2013)
3. Ribeiro, A.A., Karas, E.W., Gonzaga, C.C.: Global convergence of filter methods for nonlinear programming. SIAM J. Optim. 19(3), 1231–1249 (2008)
4. Fletcher, R., Gould, N.I.M., Leyffer, S., Toint, P.L., Wachter, A.: Global convergence of trust-region SQP-filter algorithm for general nonlinear programming. SIAM J. Optim. 13, 635–659 (2002)
5. Wang, X., Zhu, Z., Zuo, S., Huang, Q.: An SQP-filter method for inequality constrained optimization and its global convergence. Appl. Math. Comput. 217(24), 10224–10230 (2011)