R. Ramly, W. Kuntjoro, A. Radzi Abdul Ghani, R. Effendy Mohd Nasir, and Z. Muhammad, “Multi-configuration Stiffened Panels under Compressive Load: Part 1 – Theoretical Analysis”, IJET, vol. 7, no. 3.11, pp. 38–42, Jul. 2018, doi: 10.14419/ijet.v7i3.11.15926.