@article{05028347,
title = {Multiple periodic solutions for a class of second-order nonlinear neutral delay equations.},
journal = {Abstract and Applied Analysis},
volume = {2006},
year = {2006},
doi = {10.1155/AAA/2006/10252},
zbl = {1145.34039},
language = {en},
url = {http://dml.mathdoc.fr/item/05028347}
}
Shu, Xiao-Bao; Xu, Yuan-Tong. Multiple periodic solutions for a class of second-order nonlinear neutral delay equations.. Abstract and Applied Analysis, Tome 2006 (2006) . doi : 10.1155/AAA/2006/10252. http://gdmltest.u-ga.fr/item/05028347/