@article{JCA_2017_24_2_JCA_2017_24_2_a3,
     author = {T. Q. Bao and G. Eichfelder and B. Soleimani and C. Tammer},
     title = {Ekeland's {Variational} {Principle} for {Vector} {Optimization} with {Variable} {Ordering} {Structure}},
     journal = {Journal of convex analysis},
     pages = {393--415},
     year = {2017},
     volume = {24},
     number = {2},
     url = {http://geodesic.mathdoc.fr/item/JCA_2017_24_2_JCA_2017_24_2_a3/}
}