YUNUS, M. U-bend Optical Fiber to Determine Characteristics of pH Sensor. Jurnal Teori dan Aplikasi Fisika, [S. l.], v. 11, n. 1, p. 23–28, 2023. DOI: 10.23960/jtaf.v11i1.326. Disponível em: https://jtaf.fmipa.unila.ac.id/index.php/jtaf/article/view/326. Acesso em: 28 oct. 2025.