<?xml version="1.0"?>
<dblp>
<article key="journals/appml/LuoWS08" mdate="2008-08-21">
<author>Yan Luo</author>
<author>Weibing Wang</author>
<author>Jianhua Shen</author>
<title>Existence of positive periodic solutions for two kinds of neutral functional differential equations.</title>
<pages>581-587</pages>
<year>2008</year>
<volume>21</volume>
<journal>Appl. Math. Lett.</journal>
<number>6</number>
<ee>http://dx.doi.org/10.1016/j.aml.2007.07.009</ee>
<url>db/journals/appml/appml21.html#LuoWS08</url>
</article>
</dblp>
