@article{02204859, title = {Existence of zeros for operators taking their values in the dual of a Banach space.}, journal = {Fixed Point Theory and Applications [electronic only]}, volume = {2004}, year = {2004}, pages = {187-194}, doi = {10.1155/S1687182004310028}, zbl = {1088.47506}, language = {en}, url = {http://dml.mathdoc.fr/item/02204859} }
Ricceri, Biagio. Existence of zeros for operators taking their values in the dual of a Banach space.. Fixed Point Theory and Applications [electronic only], Tome 2004 (2004) pp. 187-194. doi : 10.1155/S1687182004310028. http://gdmltest.u-ga.fr/item/02204859/