@article{05816476, title = {The second eigenvalue of the }, journal = {International Journal of Differential Equations}, volume = {2010}, year = {2010}, doi = {10.1155/2010/984671}, zbl = {1207.35235}, language = {en}, url = {http://dml.mathdoc.fr/item/05816476} }
Parini, Enea. The second eigenvalue of the . International Journal of Differential Equations, Tome 2010 (2010) . doi : 10.1155/2010/984671. http://gdmltest.u-ga.fr/item/05816476/