TODD, Philip. Geometry expressions: an interactive constraint based symbolic geometry system. Teaching Mathematics and Computer Science, [S. l.], v. 6, n. 2, p. 303–310, 2008. DOI: 10.5485/TMCS.2008.0181. Disponível em: https://ojs.lib.unideb.hu/tmcs/article/view/14828. Acesso em: 27 sep. 2024.