Semenova, E. V., and S. G. Solodkii. “Approximate and Information Aspects of the Numerical solution of Unstable Integral and Pseudodifferential Equations”. Ukrains’kyi Matematychnyi Zhurnal 70, no. 3 (March 25, 2018): 429-444. Accessed April 19, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/1566.