Platero, Marcela Lilian, and Verônica Gabriela Pagliaccio. “Construyendo, Explorando Y Jugando Con triángulos”. Journal of the GeoGebra International Institute of São Paulo, vol. 1, no. 1, Mar. 2012, p. CXIII - CXXIV, https://revistas.pucsp.br/index.php/IGISP/article/view/8375.