On the unique solvability of a Cauchy problem with a fractional derivative . Advances in the Theory of Nonlinear Analysis and its Application, [S. l.], v. 7, n. 1, p. 232–242, 2023. Disponível em: https://mail.atnaea.org/index.php/journal/article/view/43.. Acesso em: 13 aug. 2026.