Using Kranoselskii fixed point theorem and Mawhin’s continuation theorem we establish the existence of periodic solutions for a second order neutral differential equation with multiple deviating arguments.
@article{1397, title = {Existence of Periodic Solutions for a Class of Second-Order Neutral Differential Equations with Multiple Deviating Arguments}, journal = {CUBO, A Mathematical Journal}, volume = {12}, year = {2010}, language = {en}, url = {http://dml.mathdoc.fr/item/1397} }
Guo, Chengjun; O’Regan, Donal; Agarwal, Ravi P. Existence of Periodic Solutions for a Class of Second-Order Neutral Differential Equations with Multiple Deviating Arguments. CUBO, A Mathematical Journal, Tome 12 (2010) . http://gdmltest.u-ga.fr/item/1397/