BUSER, P.; SEMMLER, K.-D. Study Paths, Riemann Surfaces And Strebel Differentials. Journal of Learning Analytics, [S. l.], v. 4, n. 2, p. 62–75, 2017. DOI: 10.18608/jla.2017.42.7. Disponível em: https://learning-analytics.info/index.php/JLA/article/view/5213. Acesso em: 10 sep. 2024.