<?xml version="1.0"?>
<dblp>
<article key="journals/jct/Ball03" mdate="2004-05-24">
<author>Simeon Ball</author>
<title>The number of directions determined by a function over a finite field.</title>
<pages>341-350</pages>
<year>2003</year>
<volume>104</volume>
<journal>J. Comb. Theory, Ser. A</journal>
<number>2</number>
<ee>http://dx.doi.org/10.1016/j.jcta.2003.09.006</ee>
<url>db/journals/jct/jcta104.html#Ball03</url>
</article>
</dblp>
