@article{05312427,
title = {On periodic solutions of higher-order functional differential equations.},
journal = {Boundary Value Problems [electronic only]},
volume = {2008},
year = {2008},
doi = {10.1155/2008/389028},
zbl = {1154.34035},
language = {en},
url = {http://dml.mathdoc.fr/item/05312427}
}
Kiguradze, I.; Partsvania, N.; Půža, B. On periodic solutions of higher-order functional differential equations.. Boundary Value Problems [electronic only], Tome 2008 (2008) . doi : 10.1155/2008/389028. http://gdmltest.u-ga.fr/item/05312427/