<?xml version="1.0"?>
<dblp>
<inproceedings key="conf/esop/DietrichH88" mdate="2009-09-20">
<author>Roland Dietrich</author>
<author>Frank Hagl</author>
<title>A Polymorphic Type System with Subtypes for Prolog.</title>
<pages>79-93</pages>
<year>1988</year>
<crossref>conf/esop/1988</crossref>
<booktitle>ESOP</booktitle>
<url>db/conf/esop/esop88.html#DietrichH88</url>
<ee>http://dx.doi.org/10.1007/3-540-19027-9_6</ee>
</inproceedings>
</dblp>
