@article{01214042, title = {On a new result on the existence of zeros due to Ricceri.}, journal = {Journal of Convex Analysis}, volume = {5}, year = {1998}, pages = {57-62}, zbl = {0919.47050}, language = {en}, url = {http://dml.mathdoc.fr/item/01214042} }
Lopes-Pinto, António J.B. On a new result on the existence of zeros due to Ricceri.. Journal of Convex Analysis, Tome 5 (1998) pp. 57-62. http://gdmltest.u-ga.fr/item/01214042/