TY JOUR TI Inside unbalance motors are vibration sources KW cranked shaft KW vibrations KW internal unbalance of the engine JO Actual directions of scientific researches of the XXI century: theory and practice AU Shcheglov, V.. PY 2015 IS 3 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov