<?xml version="1.0"?>
<dblp>
<article key="journals/is/Mostardi90" mdate="2003-11-27">
<author>Tommaso Mostardi</author>
<title>Estimating the size of relational SP-Theta-J operation results: an analytical approach.</title>
<pages>591-601</pages>
<year>1990</year>
<volume>15</volume>
<journal>Inf. Syst.</journal>
<number>5</number>
<url>db/journals/is/is15.html#Mostardi90</url>
</article>
</dblp>
