@article{1050266979,
author = {Eidelman, Y. S. and Tikhonov, I. V.},
title = {On periodic solutions of abstract differential equations},
journal = {Abstr. Appl. Anal.},
volume = {6},
number = {1},
year = {2001},
pages = { 489-499},
language = {en},
url = {http://dml.mathdoc.fr/item/1050266979}
}
Eidelman, Y. S.; Tikhonov, I. V. On periodic solutions of abstract differential equations. Abstr. Appl. Anal., Tome 6 (2001) no. 1, pp. 489-499. http://gdmltest.u-ga.fr/item/1050266979/