@article{10_4153_CJM_1981_018_4,
     author = {Binding, Paul},
     title = {Variational {Methods} for {One} and {Several} {Parameter} {Non-Linear} {Eigenvalue} {Problems}},
     journal = {Canadian journal of mathematics},
     pages = {210--228},
     year = {1981},
     volume = {33},
     number = {1},
     doi = {10.4153/CJM-1981-018-4},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1981-018-4/}
}