TY JOUR TI DEVELOPMENT OF THE AUTOMATIC SHIFTING BICYCLE KW shifting gears KW bicycle KW automation KW microcontroller. JO Actual directions of scientific researches of the XXI century: theory and practice AU Kalinichenko, S.. PY 2014 IS 2 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov