On Monitoring of Liquid/Gas Flow Using Ultrasonic Tomography. Jurnal Teknologi, [S. l.], v. 40, n. 1, p. 77–88, 2012. DOI: 10.11113/jt.v40.417. Disponível em: https://journals.utm.my/jurnalteknologi/article/view/417.. Acesso em: 17 jul. 2024.