%0 Journal Article %A Binding, Paul %T Variational Methods for One and Several Parameter Non-Linear Eigenvalue Problems %J Canadian journal of mathematics %D 1981 %P 210-228 %V 33 %N 1 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1981-018-4/ %R 10.4153/CJM-1981-018-4 %F 10_4153_CJM_1981_018_4