The conference “Nonlinear problems of differential equations and mathematical physics. The second Bogolyubov readings”

Kolomiyets, V. G., Y. A. Mitropolskiy, and A. M. Samoilenko. “The Conference ‘Nonlinear Problems of Differential Equations and Mathematical Physics. The Second Bogolyubov readings’”. Ukrains’kyi Matematychnyi Zhurnal, Vol. 46, no. 4, Apr. 1994, p. 471, https://umj.imath.kiev.ua/index.php/umj/article/view/5751.