@article{05141799,
title = {Ekeland's principle for vector-valued maps based on the characterization of uniform spaces via families of generalized quasi-metrics.},
journal = {Lobachevskii Journal of Mathematics},
volume = {21},
year = {2006},
pages = {33-44},
zbl = {1121.58018},
language = {en},
url = {http://dml.mathdoc.fr/item/05141799}
}
Benbrik, A.; Mbarki, A.; Lahrech, S.; Ouahab, A. Ekeland's principle for vector-valued maps based on the characterization of uniform spaces via families of generalized quasi-metrics.. Lobachevskii Journal of Mathematics, Tome 21 (2006) pp. 33-44. http://gdmltest.u-ga.fr/item/05141799/