TY - CONF T1 - The Modification of a Slip Resistance Meter for Measurement of Railhead Adhesion JO - International Heavy Haul Association Conference (IHHA 2011), Calgary, Canada, June 19th 鈥� 22nd PY - 2011/06/01 AU - Lewis SR AU - Lewis R AU - Zhu Y AU - Abbasi S AU - Olofsson U ED - Y2 - 2025/05/24 ER -