@article{Bykov2015average, author={Bykov, V.. and Kutishchev, D..}, title={Average speed of gravity of motion particles in the bed}, 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={176-179}, volume={3}, issue={4}, }