@article{10_4153_CJM_1997_053_0,
     author = {Shibata, Tetsutaro},
     title = {Multiparameter {Variational} {Eigenvalue} {Problems} {With} {Indefinite} {Nonlinearity}},
     journal = {Canadian journal of mathematics},
     pages = {1066--1088},
     year = {1997},
     volume = {49},
     number = {5},
     doi = {10.4153/CJM-1997-053-0},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1997-053-0/}
}