Mitropolskiy, Yu. A., A. G. Nikitin, O. S. Parasyuk, and A. M. Samoilenko. 1996. “Wilhelm Illich Fushchych (on His 60th Birthday)”. Ukrains’kyi Matematychnyi Zhurnal 48 (12): 1587-88. https://umj.imath.kiev.ua/index.php/umj/article/view/5181.