LIAO FUBEI, SHI HAOCHUN. Skills in Rational Number Operations. CEMJP, [S. l.], v. 23, n. 1, p. 23–30, 2015. Disponível em: http://journals.kozminski.cem-j.org/index.php/pl_cemj/article/view/369. Acesso em: 23 nov. 2024.