TY - JOUR T1 - Friction in a hydraulic motor piston/cam roller contact lined with PTFE impregnated JO - WEAR PY - 2009/03/25 AU - Lewis R ED - DO - DOI: 10.1016/j.wear.2008.12.009 VL - 266 IS - 7-8 SP - 888 EP - 892 Y2 - 2025/11/22 ER -