Klimchuk, V.I. (1966) “Gyroscope with variable moments of inertia in a cardan suspension on a movable base ”, Ukrains’kyi Matematychnyi Zhurnal, 18(2), pp. 118–122. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/8724 (Accessed: 6 December 2025).