Poovarodom, P., D. Sae- Lee, and J. Suriyawanakul. “The 3D Finite Element Analysis of Stress Distribution in Implant Supported Single Crown With Different Abutment Designs”. Engineering and Applied Science Research, vol. 45, no. 3, Sept. 2018, pp. 240-5, https://ph01.tci-thaijo.org/index.php/easr/article/view/91652.