Zernov, A.E. (2001) “On the Solvability and Asymptotics of Solutions of One Functional Differential Equation with Singularity”, Ukrains’kyi Matematychnyi Zhurnal, 53(4), pp. 455–465. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/4268 (Accessed: 14 April 2025).