OSWALD. Zur Visualisierung des Satzes von Pythagoras. Teaching Mathematics and Computer Science, [S. l.], v. 7, n. 2, p. 217–228, 2009. DOI: 10.5485/TMCS.2009.0225. Disponível em: https://ojs.lib.unideb.hu/tmcs/article/view/14856. Acesso em: 20 oct. 2024.