Boundedness and nonemptiness of solution sets for set-valued vector equilibrium problems with an application. Zhong, Ren-You, Huang, Nan-Jing, Cho, Yeol Je (2011) Journal of Inequalities and Applications [electronic only]
Bregman distances, totally convex functions, and a method for solving operator equations in Banach spaces. Butnariu, Dan, Resmerita, Elena (2006) Abstract and Applied Analysis