Ляшенко, Сергей Васильевич. “Definition of Techno-Economic Effectiveness Using the Torsion- Percussive Ripper of the Soil”. Eastern-European Journal of Enterprise Technologies 6, no. 7(54) (February 23, 2012): 21–24. Accessed January 30, 2026. https://journals.uran.ua/eejet/article/view/2308.