Noipitak, M. and Khwansri, B. (2016) “Improvement of acoustoelastic coefficient for residual stress measurement by ultrasonic in low carbon steel”, Engineering and Applied Science Research, 43, pp. 263–266. available at: https://ph01.tci-thaijo.org/index.php/easr/article/view/70206 (accessed: 23 September 2026).