MURACH, A. A.; PELEKHATA, O. B.; SOLDATOV, V. O. Approximation properties of solutions to multipoint boundary-value problems. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 73, n. 3, p. 341–353, 2021. DOI: 10.37863/umzh.v73i3.6505. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/6505. Acesso em: 5 dec. 2025.