<?xml version="1.0"?>
<dblp>
<article key="journals/amc/El-SalamEARR06" mdate="2009-05-04">
<author>F. A. Abd El-Salam</author>
<author>I. A. El-Tohamy</author>
<author>M. K. Ahmed</author>
<author>W. A. Rahoma</author>
<author>M. A. Rassem</author>
<title>Invariant relative orbits for satellite constellations: A second order theory.</title>
<pages>6-20</pages>
<year>2006</year>
<volume>181</volume>
<journal>Applied Mathematics and Computation</journal>
<number>1</number>
<ee>http://dx.doi.org/10.1016/j.amc.2006.01.004</ee>
<url>db/journals/amc/amc181.html#El-SalamEARR06</url>
</article>
</dblp>
