@article{01750234, title = {On periodic solutions of abstract differential equations.}, journal = {Abstract and Applied Analysis}, volume = {6}, year = {2001}, pages = {489-499}, doi = {10.1155/S1085337501000537}, zbl = {1010.34053}, language = {en}, url = {http://dml.mathdoc.fr/item/01750234} }
Eidelman, Y.S.; Tikhonov, I.V. On periodic solutions of abstract differential equations.. Abstract and Applied Analysis, Tome 6 (2001) pp. 489-499. doi : 10.1155/S1085337501000537. http://gdmltest.u-ga.fr/item/01750234/