@article{01439629, title = {On existence of periodic solutions of the Rayleigh equation of retarded type.}, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {23}, year = {2000}, pages = {65-68}, doi = {10.1155/S0161171200001836}, zbl = {0949.34059}, language = {en}, url = {http://dml.mathdoc.fr/item/01439629} }
Wang, Genqiang; Yan, Jurang. On existence of periodic solutions of the Rayleigh equation of retarded type.. International Journal of Mathematics and Mathematical Sciences, Tome 23 (2000) pp. 65-68. doi : 10.1155/S0161171200001836. http://gdmltest.u-ga.fr/item/01439629/