@article{01560801, title = {The Ekeland's variational principle for vector-valued multifunctions.}, journal = {APPS. Applied Sciences}, volume = {2}, year = {2000}, pages = {56-60}, zbl = {0969.32002}, language = {en}, url = {http://dml.mathdoc.fr/item/01560801} }
Rozoveanu, P. The Ekeland's variational principle for vector-valued multifunctions.. APPS. Applied Sciences, Tome 2 (2000) pp. 56-60. http://gdmltest.u-ga.fr/item/01560801/