Syuhri, A., I. Sholahuddin, S. Syuhri, and R. Qoryah. “Modeling and Evaluation of a Threshing Drum under Vertical Vibration”. Journal of Mechanical Engineering and Sciences, vol. 12, no. 2, June 2018, pp. 3750-8, doi:10.15282/jmes.12.2.2018.19.0331.