00548naa#a2200169#i#450# EN\\bibl\3778 20250127222226.1 2308-8877 20141105b2014####ek#y0engy0150####ca RUS RU DEVELOPMENT OF THE AUTOMATIC SHIFTING BICYCLE Journal article Voronezh FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov 2014 2 с. Journal article local Kalinichenko S. zh-szf.ru