On the 90th Anniversary of the Birth of Academician N.N. Bogolyubov

Mitropolskiy, Y. A. “On the 90th Anniversary of the Birth of Academician N.N. Bogolyubov”. Ukrains’kyi Matematychnyi Zhurnal, Vol. 51, no. 8, Aug. 1999, pp. 1012–1013, https://umj.imath.kiev.ua/index.php/umj/article/view/4692.