@article{Fedorov2015on,
author={Fedorov, O.. and Rybalkin, D..},
title={On the modernization of drills for combined stumps},
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={137-140},
volume={3},
issue={2},
}