TY - JOUR AU - Shibata, Tetsutaro TI - Multiparameter Variational Eigenvalue Problems With Indefinite Nonlinearity JO - Canadian journal of mathematics PY - 1997 SP - 1066 EP - 1088 VL - 49 IS - 5 UR - http://geodesic.mathdoc.fr/articles/10.4153/CJM-1997-053-0/ DO - 10.4153/CJM-1997-053-0 ID - 10_4153_CJM_1997_053_0 ER -