@article{02163698, title = {Periodic solutions for nonautonomous differential equations and inclusions in tubes.}, journal = {Abstract and Applied Analysis}, volume = {2004}, year = {2004}, pages = {1057-1079}, doi = {10.1155/S1085337504403042}, zbl = {1076.34046}, language = {en}, url = {http://dml.mathdoc.fr/item/02163698} }
Gabor, Grzegorz. Periodic solutions for nonautonomous differential equations and inclusions in tubes.. Abstract and Applied Analysis, Tome 2004 (2004) pp. 1057-1079. doi : 10.1155/S1085337504403042. http://gdmltest.u-ga.fr/item/02163698/