@article{01930014, title = {A min-max theorem and its applications to nonconservative systems.}, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {2003}, year = {2003}, pages = {1101-1110}, doi = {10.1155/S0161171203108010}, zbl = {1027.34049}, language = {en}, url = {http://dml.mathdoc.fr/item/01930014} }
Weiguo, Li; Hongjie, Li. A min-max theorem and its applications to nonconservative systems.. International Journal of Mathematics and Mathematical Sciences, Tome 2003 (2003) pp. 1101-1110. doi : 10.1155/S0161171203108010. http://gdmltest.u-ga.fr/item/01930014/