P. P. Zabreiko and S. V. Ponomareva, “On continuous solutions of the Cauchy problem for equations of fractional order”, Журнал Белорусского государственного университета. Математика. Информатика, no. 3, pp. 39–45, Jan. 2019, Accessed: Jul. 17, 2026. [Online]. Available: https://journals.bsu.by/index.php/mathematics/article/view/1011