{\rtf1\ansi\deff0\deftab360 {\fonttbl {\f0\fswiss\fcharset0 Arial} {\f1\froman\fcharset0 Times New Roman} {\f2\fswiss\fcharset0 Verdana} {\f3\froman\fcharset2 Symbol} } {\colortbl; \red0\green0\blue0; } {\info {\author Biblio}{\operator }{\title Biblio RTF Export}} \f1\fs24 \paperw11907\paperh16839 \pgncont\pgndec\pgnstarts1\pgnrestart R\'f6\'dfling, G., and J. \'c1. Vel\'e1zquez-Iturbide, "Editorial: Program and Algorithm Visualization in Education", \i Trans. Comput. Educ.\i0 , vol. 9, no. 2, New York, NY, USA, ACM, pp. 1?6, 2009.\par \par }