@article{2003-dubois ,note={URL: {\tt http://grosskurth.ca/\allowbreak bib/\allowbreak entries.html\#\allowbreak 2003/\allowbreak dubois}} ,author={Paul F. Dubois and Thomas Epperly and Gary Kumfert} ,ISSN={1521--9615} ,journal={Computing in Science \& Engineering} ,number={5} ,pages={83--88} ,title={{Why Johnny can't build}} ,volume={5} ,year={2003} }