Pochulu , Marcel David. “MEANINGS ATTRIBUTED TO THE SOLUTION OF PROBLEMS BY USING DYNAMIC GEOMETRY SOFTWARE DURING THE PROFESSIONAL EVOLUTION OF TEACHERS”. Revista Latinoamericana de Investigación en Matemática Educativa, vol. 13, no. 3, July 2010, pp. 307-36, https://www.relime.org/index.php/relime/article/view/303.