@article{05791547,
title = {Sign-changing and extremal constant-sign solutions of nonlinear elliptic Neumann boundary value problems.},
journal = {Boundary Value Problems [electronic only]},
volume = {2010},
year = {2010},
doi = {10.1155/2010/139126},
zbl = {1207.35171},
language = {en},
url = {http://dml.mathdoc.fr/item/05791547}
}
Winkert, Patrick. Sign-changing and extremal constant-sign solutions of nonlinear elliptic Neumann boundary value problems.. Boundary Value Problems [electronic only], Tome 2010 (2010) . doi : 10.1155/2010/139126. http://gdmltest.u-ga.fr/item/05791547/