Kurnik, W., and Z. Skup. “Torsional Vibration of a System With a Friction Clutch Under Random Torque Excitation”. Engineering Transactions 42, no. 3 (September 30, 1994): 299–313. Accessed March 19, 2026. https://et.ippt.gov.pl/index.php/et/article/view/1542.