TY JOUR TI THEORETICAL SUBSTANTIATION OF CATERPILLAR TURN IN PLACE WITH DIFFERENTIAL STEERING GEAR AT NEUTRAL IN TRANSMISSION KW transmission KW gear KW planetary mechanisms KW turning KW hydro-volume gear JO Bulletin of Bryansk state technical university AU Zakirov Ramil' Agzamovich, R.A. AU Zemlyanskiy, Y.M. AU Kondakov, S.V. AU Podzhivotova, I.A. PY 2020 IS 2020 PB Bryansk State Technical University