1. BRITISH STANDARDS INSTITUTION 1973 ,Guide to the Safety Aspects of Human Vibration Experiments, Draft for Development , 23 .
2. CAMPBELL , M. A. C. 1974 , The effect of prolonged mechanical vibration on reading and writing proficiency , Project Report, Department of Mechanical Engineering , Royal Miltary College of Science , Shrivenham .
3. Vibration and comfort: vertical and lateral motion in the range 0·5 to 5·0 Hz
4. FARMILO , B. and BENNETT , M. D. 1975 , Human response to vibration in military cross-country vehicles, a comparison of random and sinusoidal vibration effects , Technical Note AM/69, Department of Mechanical Engineering , Royal Military College of Science , Shrivenham .