@article{05367990,
title = {Multiple nodal solutions for some fourth-order boundary value problems via admissible invariant sets.},
journal = {Boundary Value Problems [electronic only]},
volume = {2008},
year = {2008},
doi = {10.1155/2008/403761},
zbl = {1158.34312},
language = {en},
url = {http://dml.mathdoc.fr/item/05367990}
}
Yang, Yang; Zhang, Jihui; Zhang, Zhitao. Multiple nodal solutions for some fourth-order boundary value problems via admissible invariant sets.. Boundary Value Problems [electronic only], Tome 2008 (2008) . doi : 10.1155/2008/403761. http://gdmltest.u-ga.fr/item/05367990/