Ungbhakorn, Variddhi, Varintra Ungbhakorn, and Paiboon Techalertpaisarn. 2015. “Assessment of Castigliano’s Theorem on the Analysis of Closing Loop for Canine Retraction by Experiment and Finite Element Method. Part II”. Science & Technology Asia 10 (2):38-44. https://ph02.tci-thaijo.org/index.php/SciTechAsia/article/view/41590.