@article{Shulyak2015efficient,
author={Shulyak, M..},
title={Efficient operation of the tractor in the unit with machine a variable mass},
journal={Actual directions of scientific researches of the XXI century: theory and practice},
publisher={FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov},
year={2015},
pages={161-164},
volume={3},
issue={2},
}