1. Beldiman, M., Panaitescu, E., Dogaru, L.: Approximate quasi efficient solutions in multiobjective optimization. Bull. Math. Soc. Sci. Math. Roum. 51(99), 109–121 (2008)
2. Bertsekas, D.P.: Nonlinear Programming. Athena Scientific, Belmont (1999)
3. Bigi, G., Capătă, A., Kassay, G.: Existence results for strong vector equilibrium problems and their applications. Optimization 61, 567–583 (2012)
4. Capătă, A., Kassay, G.: On vector equilibrium problems and applications. Taiwan. J. Math. 15, 365–380 (2011)
5. Clarke, F.H.: Optimization and Nonsmooth Analysis. Wiley-Interscience, New York (1983)