Instances and classes in software engineering
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\begin{bibtex} @article{DBLP:journals/sigart/WeltyF99,
author = {Christopher A. Welty and
David A. Ferrucci},
title = {Instances and classes in software engineering},
journal = {Intelligence},
volume = {10},
number = {2},
year = {1999},
pages = {24-28},
ee = {http://doi.acm.org/10.1145/309697.309705},
bibsource = {DBLP, http://dblp.uni-trier.de}
}
\end{bibtex}
