@article{1250130554, author = {Clark, David C.}, title = {Eigenvalue bifurcation for odd gradient operators}, journal = {Rocky Mountain J. Math.}, volume = {5}, number = {4}, year = {1975}, pages = { 317-336}, language = {en}, url = {http://dml.mathdoc.fr/item/1250130554} }
Clark, David C. Eigenvalue bifurcation for odd gradient operators. Rocky Mountain J. Math., Tome 5 (1975) no. 4, pp. 317-336. http://gdmltest.u-ga.fr/item/1250130554/