Rokityansky, I.I. “The Memory of Vladimir Schuman - a Scientist, Citizen, Patriot (on the Occasion of His 75th Birthday)”. Geofizicheskiy Zhurnal 39, no. 1 (March 1, 2017): 144–146. Accessed May 20, 2022. http://journals.uran.ua/geofizicheskiy/article/view/95207.