FERRER, F. P. INVESTIGATING STUDENTS’ LEARNING DIFFICULTIES IN INTEGRAL CALCULUS. PEOPLE: International Journal of Social Sciences, [S. l.], v. 2, n. 1, p. 310–324, 2016. DOI: 10.20319/pijss.2016.s21.310324. Disponível em: https://grdspublishing.org/index.php/people/article/view/318. Acesso em: 4 may. 2024.