By applying the continuation theorem of coincidence degree theory, we establish new results on the existence and uniqueness of 2π-periodic solutions for a class of nonlinear nth order differential equations with delays.
@article{bwmeta1.element.bwnjournal-article-doi-10_4064-ap94-1-2, author = {Weiwen Shao and Fuxing Zhang and Ya Li}, title = {Existence and uniqueness of periodic solutions for a kind of nonlinear nth order differential equations with delays}, journal = {Annales Polonici Mathematici}, volume = {93}, year = {2008}, pages = {15-27}, zbl = {1151.34055}, language = {en}, url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-ap94-1-2} }
Weiwen Shao; Fuxing Zhang; Ya Li. Existence and uniqueness of periodic solutions for a kind of nonlinear nth order differential equations with delays. Annales Polonici Mathematici, Tome 93 (2008) pp. 15-27. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-ap94-1-2/