Rabinowitz, Paul H. “Some Global Results for Nonlinear Eigenvalue Problems”. Journal of Functional Analysis, vol. 7, no. 3, 1971, pp. 487-13, https://doi.org/10.1016/0022-1236(71)90030-9.
Rabinowitz, P. H. (1971). Some global results for nonlinear eigenvalue problems. Journal of Functional Analysis, 7(3), 487-513. https://doi.org/10.1016/0022-1236(71)90030-9
Rabinowitz PH. Some global results for nonlinear eigenvalue problems. Journal of Functional Analysis. 1971;7(3):487-513.