SCHECHTER, M. Custom monotonicity methods. MATHEMATICA SCANDINAVICA, [S. l.], v. 109, n. 1, p. 133–146, 2011. DOI: 10.7146/math.scand.a-15181. Disponível em: https://www.mscand.dk/article/view/15181. Acesso em: 3 may. 2024.