@article {
author = {Balamuralitharan, S.},
title = {Periodic solutions of fourth-order delay differential equation},
journal = {Bulletin of the Iranian Mathematical Society},
volume = {41},
number = {2},
pages = {307-314},
year = {2015},
publisher = {Iranian Mathematical Society (IMS)},
issn = {1017-060X},
eissn = {1735-8515},
doi = {},
abstract = {In this paper the periodic solutions of fourth order delay differential equation of the form $\ddddot{x}(t)+a\dddot{x}(t)+f(\ddot{x}(t-\tau(t)))+g(\dot{x}(t-\tau(t)))+h({x}(t-\tau(t)))=p(t)$ is investigated. Some new positive periodic criteria are given. },
keywords = {Fourth-order delay differential equation,periodic solutions},
url = {http://bims.iranjournals.ir/article_610.html},
eprint = {http://bims.iranjournals.ir/article_610_0669d6cfade607a09955798000b786fb.pdf}
}