Sokil, M. B., and O. I. Khytriak. “Wave Theory of Motion in the Investigation of Vibration of Flexible Elements Drivegear and Transport in View of Longitudinal Motion”. Military Technical Collection, no. 4 (May 4, 2011): 102–105. Accessed March 9, 2022. http://vtz.asv.gov.ua/article/view/174089.