Bovenzi, M., F. Rui, C. Negro, F. D’Agostin, G. Angotzib, S. Bianchi, L. Bramanti, G. Festa, S. Gatti, I. Pinto, L. Rondina, and N. Stacchini. 2006. An epidemiological study of low back pain in professional drivers. Journal of Sound and Vibration 298 (4): 514–539.
Burdorf, A., C. T. J. Hulshof. 2006. Modeling the effects of exposure to whole-body vibration on low-back pain and its long-term consequences for sickness absence and associated work disability. Journal of Sound and Vibration 298 (2): 480–491.
Dhingra, H. S., V. K. Tewari and S. Singh. 2003. Discomfort, pressure distribution and safety in operator’s seat. Agricultural engineering international: The CIGR journal of scientific research and development. Invited overview paper. Vol. V July 2003.
Dias, B. and J. I. Phillips. 2002. To identify the need for and formulate further research on whole body vibration. Final project report. National center for occupational health. pp. 1-14.
Fritz, M., S. Fischer, and P. Brode. 2005. Vibration induced low back disorders comparison of the vibration evaluation according to ISO 2631 with a force-related evaluation. Applied Ergonomics 36 (6): 481–488.
Gallais L., M. J. Griffin. 2006. Low back pain in car drivers: A review of studies published 1975 to 2005. Journal of Sound and Vibration 298 (4): 499–513.
Gierke, H. E., and A. J. Brammer. 2002. Effects of shock and vibration on humans. pp. 1-62. in C. M. Harris, A. G. Piersol (eds.) harris’ shock and vibration handbook. McGraw-Hill Handbooks.
Goglia, V., Z. Gospodaric, S. Kosutic, and D. Filipovic. 2003. Hand-transmitted vibration from the steering wheel to drivers of a small four-wheel drive tractor. Applied Ergonomics 34 (2): 45–49.
Griffin, M. J. 1990. Handbook of Human Vibration, Academic Press, New York. pp. 1-200.
Guo, L. X., M. Zhang, Z. W. Wang,Y. M. Zhang, B. C. Wen, and J. L. Li. 2008. Influence of anteroposterior shifting of trunk mass centroid on vibration configuration of human spine. Computers in Biology and Medicine 38 (3): 146 – 151.
Health hazards from whole-body vibration caused by mobile agricultural machinery. 2005. Printed and published by health and safety executive, (HSE). pp. 1-3.
Hostens, I., H. Ramon. 2003. Descriptive analysis of combine cabin vibrations and their effect on the human body. Journal of Sound and Vibration 266 (2): 453–464.
ISO 2631-1, 1997. Mechanical Vibration and Shock—Guide to theEvaluation of Human Exposure to Whole-Body Vibration—Part 1:General Requirements, second ed. ISO, Geneva.
Kittusamy, N. K., and B. Buchholz. 2004. Whole-body vibration and postural stress among operators of construction equipment: a literature review, Journal of Safety Research 35 (3): 255–261.
Li, L., F. Lamis, and S. E. Wilson. 2008. Whole-body vibration alters proprioception in the trunk. International Journal of Industrial Ergonomics 38 (4): 792–800.
Mayton, A. G., N. K. Kittusamy, D. H. Ambrose, C. C. Jobes and M. L. Legault. 2007. Jarring/jolting exposure and musculoskeletal symptoms among farm equipment operators. International Journal of Industrial Ergonomics. 37(6): 533-551.
Mehta, C. R., L. P. Gite, S. C. Pharade, J. Majumder, and M. M. Pandey. 2008. Review of anthropometric considerations for tractor seat design. International Journal of Industrial Ergonomics 38 (2008): 546–554.
Okunribido, O.O., M. Magnusson and M. H. Pope. 2006. Low back pain in drivers: The relative role of whole-body vibration, posture and manual materials handling. Special Issue on the Third International Conference on Whole-body Vibration Injuries. Journal of Sound and Vibration. 298 (3): 540-555.
Pope, M., M. Magnusson, R. Lundstrom, M. C. Hulshof, J. Verbeek, and M. Bovenzi. 2002. Guidelines for whole-body vibration health surveillance. Journal of sound and vibration 253 (1): 131-167.
Scarlett, A. J., J. S. Price and R. M. Stayner. 2005. Whole-body vibration on agricultural vehicles: Evaluation of emission and estimated exposure levels. Printed and published by the. Health and Safety Executive (HSE). Contract Research Report 413/2002. HSE Books, ISBN 0 7176 2276. pp. 1-231.
Snedecor, G. W. and W. G. Cochran. 1980. Statistical methods. Oxford & J.BH Publishing com. 7th. edition. pp. 224-308.
Tiemessen, I. J., T. J. Hulshof, and H. W. Frings-Dresen. 2007. An overview of strategies to reduce whole-body vibration exposure on drivers: A systematic review. International Journal of Industrial Ergonomics 37 (3): 245–256.
Wang, W., S. Rakheja, and P. E. Boileau. 2006. The role of seat geometry and posture on the mechanical energy absorption characteristics of seated occupants under vertical vibration. International Journal of Industrial Ergonomics 36 (2): 171–184.
World Health Organisation, 2000. Obesity: preventing and managing the global epidemic: report of a WHO consultation. WHO Technical Report Series, 894 (I–xii), pp. 1–253.
Zein- ELdin, A. M., M. A. Shaiboon, A. O. M. Aref. 2003. Estimating tractor vibration levels produced from using agricultural equipment seed bed preparation machines. Misr. J. Agric. Eng. 20 (2): 483-497.
نشرة الآلات والمعدات الزراعیة ، 2008 . قطاع الشئون الاقتصادیة ، وزارة الزراعة واستصلاح الأراضى ، جمهوریة مصر العربیة .