E.T., Bahtiar, Nugroho N., and Surjokusumo S. “Estimating Young’s Modulus and Modulus of Rupture of Coconut Logs Using Reconstruction Method”. Civil Engineering Dimension 12, no. 2 (August 26, 2010): 65-72. Accessed April 19, 2024. https://ced.petra.ac.id/index.php/civ/article/view/17976.