ALI, M. G. S.; ELSAYED, N. Z.; EID, A. M. Investigation of Ultrasonic Calibration using Steel Standard Reference Blocks. Walailak Journal of Science and Technology (WJST), [S. l.], v. 9, n. 4, p. 417–424, 2012. Disponível em: https://wjst.wu.ac.th/index.php/wjst/article/view/249. Acesso em: 28 apr. 2024.