[1]
S. G. Krein and I. V. Sapronov, “One class of solutions of Volterra equations with regular singularity”, Ukr. Mat. Zhurn., vol. 49, no. 3, pp. 424–432, Mar. 1997, Accessed: Dec. 05, 2025. [Online]. Available: https://umj.imath.kiev.ua/index.php/umj/article/view/5015