VAJDA, Róbert. An e-learning environment for elementary analysis: combining computer algebra, graphics and automated reasoning. Teaching Mathematics and Computer Science, [S. l.], v. 7, n. 1, p. 13–34, 2009. DOI: 10.5485/TMCS.2009.0189. Disponível em: https://ojs.lib.unideb.hu/tmcs/article/view/14845. Acesso em: 27 sep. 2024.