9Carlson F G, Round K C. Development and implementation of advanced brakes and improved suspenssion systems for the North American network[ A]. Implementation of Heavy Haul Technology for Network Efficiency [ C ]. International Heavy Haul Association 2003 Specialist Technical Session, 2003 (5) : 1.1 - 1.10
10Dave van der Meulen. Railway globalization and heavy haul [ A ]. High Tech in Heavy Haul [ C ]. International Heavy Haul Association 2007 Specialist Technical Session, 2007 (6) 329 - 338
