BABENKO, V. V. Optimization of interval formulas for approximate integration of set-valued functions monotone with respect to inclusion. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 63, n. 11, p. 1565–1569, 2011. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/2826. Acesso em: 14 apr. 2025.