1. Auslender, A., Teboulle, M.: Asymptotic Cones and Functions in Optimization and Variational Inequalities. Springer, New York (2003)
2. Bao, T.Q., Eichfelder, G., Soleimani, B., Tammer, C.: Ekeland‘s variational principle for vector optimization with variable ordering structure. J. Conv. Anal. 24, 393–415 (2017)
3. Bao, T.Q., Mordukhovich, B.S., Soubeyran, A., Tammer, C.: Vector optimization with domination structures: variational principles and applications. Set Val. Var Anal. (2021). https://doi.org/10.1007/s11228-021-00615-y
4. Benson, H.P.: An improved definition of proper efficiency for vector maximization with respect to cones. J. Math. Appl. 71, 232–241 (1979)
5. Borwein, J.M.: Proper efficient points for maximizations with respect to cones. SIAM J. Control Optim. 15, 57–63 (1977)