@article{1183529036,
author = {Berger, Melvyn S.},
title = {On nonlinear perturbations of the eigenvalues of a compact self-adjoint operator},
journal = {Bull. Amer. Math. Soc.},
volume = {73},
number = {6},
year = {1967},
pages = { 704-708},
language = {en},
url = {http://dml.mathdoc.fr/item/1183529036}
}
Berger, Melvyn S. On nonlinear perturbations of the eigenvalues of a compact self-adjoint operator. Bull. Amer. Math. Soc., Tome 73 (1967) no. 6, pp. 704-708. http://gdmltest.u-ga.fr/item/1183529036/