On the 85th birthday of Alexandr Yul’evich Ishlinskii

Bogolyubov, A. N., Y. A. Mitropolskiy, and M. O. Pustovoytov. “On the 85th Birthday of Alexandr Yul’evich Ishlinskii”. Ukrains’kyi Matematychnyi Zhurnal, Vol. 50, no. 10, Oct. 1998, pp. 1416–1418, https://umj.imath.kiev.ua/index.php/umj/article/view/4827.