TY JOUR TI INCREASING TECHNOLOGY IN THE DESIGN OF WAVE REDUCERS FOR POWER DRIVES REFERENCES KW wave reducer KW intermediate rolling elements KW contact stresses KW hardness JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Bolshakov, G.S. AU Tarasov, D.A. PY 2025 IS 10 PB Belgorod State Technological University named after V.G. Shukhov