shivakoti, deepika, and KUMAR G VINOD. “Experimental and Theoretical Studies of Sandwich Beams Made of Steel, Concrete, and Steel Have Shown Interesting Results”. The journal of contemporary issues in business and government 26, no. 3 (December 30, 2020): 20–27. Accessed October 30, 2025. https://cibgp.com/index.php/1323-6903/article/view/508.