TY JOUR TI EFFICIENCY OF COMBINED RAIL LUBRICATION KW lubrication of rails KW lubricating material KW surface KW edge KW head KW contact zone JO Transport engineering AU Kossov, V.S. AU Panin, Y.A. AU Trifonov, A.V. AU Gavryushin, M.A. AU Panin, A.Y. PY 2024 IS 2024 PB Bryansk State Technical University