Yusoff M.S, M., Maarop, H., Noorul Ehsan, M., & Harun, H. (2002). Development of a Nondestructive Quantitative Procedure for the Analysis of Gold in Jewellery. Malaysian Journal of Science, 21, 27–30. Retrieved from https://samudera.um.edu.my/index.php/MJS/article/view/8853