A Review Characterization of Some Material Oxides using Ultrasonic Techniques. SMART MOVES JOURNAL IJOSCIENCE, [S. l.], v. 7, n. 8, p. 68–72, 2021. DOI: 10.24113/ijoscience.v7i8.407. Disponível em: https://ijoscience.com/index.php/ojsscience/article/view/407. Acesso em: 18 jun. 2026.