Functional Calculus for the Series of Semigroup Generators Via Transference. Global Journal of Science Frontier Research, [S. l.], v. 19, n. F5, p. 57–84, 2019. Disponível em: https://www.journalofscience.org/index.php/GJSFR/article/view/2286. Acesso em: 14 aug. 2026.