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2. European Committee for Standardisation Prestandard ENV 12299:1999, Railway applications – ride comfort for passengers – measurement and evaluation, 1999.
3. International Organization for Standardization ISO 2631-1, Mechanical vibration and shock – evaluation of human exposure to whole-body vibration – part 1: general requirements, 1997.
4. R.E. Chaney, Whole-body vibration of standing subjects, Boeing Co., Human Factors Technical Report D3-6474, 1965.
5. Effects of postural and methodological changes on equal comfort contours for whole-body, vertical, sinusoidal vibration;Jones;Applied Acoustics,1972