SLYUSARCHUK, V. Yu. Differential convergence criteria for operator improper integrals and series. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 73, n. 9, p. 1245–1259, 2021. DOI: 10.37863/umzh.v73i9.6093. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/6093. Acesso em: 5 dec. 2025.