Gorovoy, S. “Dynamic Rotor Stability in the Case of Radial - Angular Vibrations”. Bulletin of Sumy National Agrarian University. The Series: Mechanization and Automation of Production Processes, no. 2 (40), May 2021, pp. 8-12, https://www.snaubulletin.com.ua/index.php/mapp/article/view/346.