Oleksii Mykolajovych Boholyubov (on His 90th Birthday)

Koshlyakov, V. N., Y. A. Mitropolskiy, A. M. Samoilenko, and V. M. Urbansky. “Oleksii Mykolajovych Boholyubov (on His 90th Birthday)”. Ukrains’kyi Matematychnyi Zhurnal, Vol. 53, no. 3, Mar. 2001, pp. 294-5, https://umj.imath.kiev.ua/index.php/umj/article/view/4251.