KHUMPRAPHAN, P. Quality of Sonographic Image on Printing Paper by Using Olive Oil as Sound Media. Journal of Health Science of Thailand, [S. l.], v. 17, n. 2, p. 194–199, 2017. Disponível em: https://thaidj.org/index.php/JHS/article/view/994. Acesso em: 6 dec. 2025.