\input zb-basic
\input zb-ioport
\iteman{io-port 70362333}
\itemau{Hmelo, Cindy E.; Vanegas, Jorge A.; Realff, Matthew; Bras, Bret; Mulholland, Jim; Shikano, Terry; Guzdial, Mark}
\itemti{Technology support for collaborative learning in a problem-based curriculum for sustainable technology}
\itemso{CSCL, 169-172 (1995).}
\itemcc{}
\itemut{}
\itemli{http://dl.acm.org/citation.cfm?id=222160}
\end