F. ALNAJJAR, S.; M. SULAIMAN, J. Detection of light transmittance of liquids using an electronic circuit. Journal of Education and Science (JES), [S. l.], v. 22, n. 3, p. 74–81, 2009. DOI: 10.33899/edusj.2009.57765. Disponível em: https://ojs.uomosul.edu.iq/index.php/edusj/article/view/24211. Acesso em: 7 aug. 2025.