W. M. F. B. Wan Azman, R. B. Shamsudin, M. Z. B. Mohd Nor, and A. B. Hamzah, “Effect of Moisture Content on the Angle of Repose and Coefficient of Kinetic Friction of Sago Trunk (Metroxylon spp.)”, Adv Agric Food Res J, vol. 2, no. 1, Jan. 2021.