MOHD RAHALIM, F. .; JAMALUDIN, J.; RAISIN, S. N. NON-INVASIVE GRADING TECHNIQUE FOR RUBY GEMSTONE USING CHARGE-COUPLED DEVICE (CCD) . ASEAN Engineering Journal, [S. l.], v. 13, n. 1, p. 69-74, 2023. DOI: 10.11113/aej.v13.18267. Disponível em: https://journals.utm.my/aej/article/view/18267. Acesso em: 8 jun. 2023.