References
- BROOKS , B. M. , RUFFBLL-SMITH , H. P. and WARD , J. S. , 1974 , An Analysis of Factors Affecting the Use of Buses by both Elderly and Ambulant Disabled Persons. British Leylaitd Truck and Bus Division, TRRL Contract Report CON/3410/32 .
- BROOKS , B. M. , EDWARDS , H M. , ERASER , C. R. and LEVIS , J. A. , 1978 . Passenger Problems on Moving Buses. Leyland Vehicles Human Factors Group, TRRL Contract Summary Report CON/3140/32 .