Mitropolsky, Yu. A., and V. N. Shevelo. “Nikolai Ivanovich Muskhelishvili (on His 80th Birthday)”. Ukrains’kyi Matematychnyi Zhurnal 23, no. 1 (December 25, 1970): 49–51. Accessed December 6, 2025. https://umj.imath.kiev.ua/index.php/umj/article/view/8478.