Waroonrod, Jirawat, and Kiatfa Tangchaichit. “The Transition Curve from Plate-Like to Beam-Like Behaviors in the Free Vibration of a Beam with both ends fixed and Variable Varied Mechanical Properties”. Engineering and Applied Science Research 34, no. 3 (June 6, 2012): 375–390. accessed April 6, 2025. https://ph01.tci-thaijo.org/index.php/easr/article/view/1829.