@article{Khafizov2015energy,
author={Khafizov, K.. and Khafizov, R..},
title={ENERGY OPTIMIZATION METHOD OF MAIN PARAMETERS OF TRACTORS},
journal={Vestnik of Kazan State Agrarian University},
publisher={Kazan state agrarian University},
year={2015},
pages={75-81},
volume={10},
issue={1},
}