BABENKO, V. V.; BABENKO, V. F. Optimization of approximate integration of set-valued functions monotone with respect to inclusion. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 63, n. 2, p. 147–155, 2011. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/2706. Acesso em: 5 dec. 2025.