@article{01452802,
title = {Periodic solutions of systems with asymptotically even nonlinearities.},
journal = {Journal of Applied Mathematics and Stochastic Analysis},
volume = {13},
year = {2000},
pages = {41-50},
doi = {10.1155/S1048953300000058},
zbl = {0957.47044},
language = {en},
url = {http://dml.mathdoc.fr/item/01452802}
}
Kloeden, Peter E.; Krasnosel'skii, Alexander M. Periodic solutions of systems with asymptotically even nonlinearities.. Journal of Applied Mathematics and Stochastic Analysis, Tome 13 (2000) pp. 41-50. doi : 10.1155/S1048953300000058. http://gdmltest.u-ga.fr/item/01452802/