@article{702410,
title = {Lectures on Lyusternik-Schnirelman theory for indefinite nonlinear eigenvalue problems and its applications},
booktitle = {Nonlinear Analysis, Function Spaces and Applications},
series = {GDML\_Books},
publisher = {BSB B. G. Teubner Verlagsgesellschaft},
address = {Leipzig},
year = {1979},
pages = {176-219},
mrnumber = {MR0578914},
zbl = {0411.47040},
url = {http://dml.mathdoc.fr/item/702410}
}
Zeidler, Eberhard. Lectures on Lyusternik-Schnirelman theory for indefinite nonlinear eigenvalue problems and its applications, dans Nonlinear Analysis, Function Spaces and Applications, GDML_Books, (1979), pp. 176-219. http://gdmltest.u-ga.fr/item/702410/