BAS, S. V. Wolfram|Alpha is a cloud-based math learning service. CTE Workshop Proceedings, Kryvyi Rih, Ukraine, v. 1, p. 121–122, 2013. DOI: 10.55056/cte.160. Disponível em: https://acnsci.org/journal/index.php/cte/article/view/160.. Acesso em: 22 jul. 2024.