KOCHUBEI, A. N. Distributed-order calculus: An operator-theoretic interpretation. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 60, n. 4, p. 478–486, 2008. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/3170. Acesso em: 6 dec. 2025.