The existence of infinitely many solutions for a mixed boundary value problem is established. The approach is based on variational methods.
@article{bwmeta1.element.bwnjournal-article-doi-10_4064-ap99-3-5,
author = {Gabriele Bonanno and Elisabetta Tornatore},
title = {Infinitely many solutions for a mixed boundary value problem},
journal = {Annales Polonici Mathematici},
volume = {98},
year = {2010},
pages = {285-293},
zbl = {1208.34021},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-ap99-3-5}
}
Gabriele Bonanno; Elisabetta Tornatore. Infinitely many solutions for a mixed boundary value problem. Annales Polonici Mathematici, Tome 98 (2010) pp. 285-293. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-ap99-3-5/