CAIFEN, W. .; HAILUN, F. .; RONGRONG, C. . The Research on Graduate Students’ Understanding of Three Basic Limit Concepts. American Journal of Education and Learning, [S. l.], v. 3, n. 2, p. 100–107, 2018. DOI: 10.20448/804.3.2.100.107. Disponível em: http://onlinesciencepublishing.com/index.php/ajel/article/view/43. Acesso em: 12 may. 2024.