M. Rafiq Yanhar, A. Bakhori Nasution, S. Rahmah Sibuea, and A. Haris Nasution, “Effect of Addition of Composite Filler Volume on Ganoderma Boninense Mushroom Against Tensile Strength, Modulus of Elasticity, and Filler Distribution”, IJET, vol. 7, no. 4.15, pp. 461–464, Oct. 2018, doi: 10.14419/ijet.v7i4.15.25256.