PAVANI, A. M. B. CMaps, Learning Objects and a Blended Learning Signals & Systems Course. International Journal of Engineering Pedagogy (iJEP), [S. l.], v. 4, n. 5, p. pp. 5–11, 2014. DOI: 10.3991/ijep.v4i5.3533. Disponível em: https://online-journals.org/index.php/i-jep/article/view/3533. Acesso em: 13 aug. 2022.