Bandaranayake, Sathya, Tharika Kahandawa Arachchi, and Kumari Gamage. “A Comparative Study to Assess the Thermal Behaviour of Sandwich Roof Panels With Coconut Fibre As an Alternative Core Material to Polyurethane”. Electronic Journal of Structural Engineering 23, no. 3 (July 25, 2023): 14–18. Accessed October 9, 2024. https://ejsei.com/EJSE/article/view/415.