TY JOUR TI WAYS TO REDUCE THE WEAR OF WHEEL FLANGES IN FREIGHT BOGIES KW wear KW cars KW frame forces KW friction unit KW units KW bogie KW materials JO Transport engineering AU Filippov, V.N. AU Petrov, A.A. AU Kurzina, E.G. AU Kurzina, A.M. PY 2022 IS 2022 PB Bryansk State Technical University