1. British Standards Institution, 1987. British Standard Guide to Measurement and evaluation of human exposure to whole-body mechanical vibration and repeated shock. BS 6841. British Standards Institution, London.
2. British Standards Institution, 1989. Guide to safety aspects of experiments in which people are exposed to mechanical vibration and shock. BS 7085. British Standards Institution, London.
3. Vibrotactile intensity discrimination measured by three methods;Gescheider;J. Acoust. Soc. Am.,1990
4. International Organization for Standardization, 1992. Mechanical vibration — laboratory method for evaluating vehicle seat vibration. Part 1: basic requirements. ISO 10326-1. International Organization for Standardization, Geneva.
5. International Organization for Standardization, 1997. Mechanical vibration and shock — evaluation of human exposure to whole-body vibration. Part 1: General requirements. ISO 2631-1. International Organization for Standardization, Geneva.