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\bibitem{1607} Enric Marti, Carme Julia, \& Debora Gil. (2006).<a href={\textquoteright}http://dx.doi.org/10.1111/j.1467-8659.2006.00920.x{\textquoteright}{\textquoteright}> "A PBL Experience in the Teaching of Computer Graphics "</a> . \textit{Computer Graphics Forum}, \textit{25}(1), 95--103.

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