Evaluation of the “Tractor-plow” system using statistical model Viktor B. Rykov, Sergey I. Kambulov, Evgeny I. Trubilin and Yuri K. Kastidi E3S Web Conf., 193 (2020) 01007 Published online: 08 October 2020 DOI: 10.1051/e3sconf/202019301007