S. SyathAbuthakeer, T. Pavithran, M.S.E. Vigneshra, and S. Vimalkumar. “Experimental Investigation on Human Hand Arm Vibration in a Jack Hammer Operator – Sand Floor”. International Journal of Intellectual Advancements and Research in Engineering Computations, vol. 5, no. 2, July 2017, pp. 1945-8, doi:10.61096/ijiarec.v5.iss2.2017.1945-1948.