@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/