Abdul Rahim, Ruzairi, Mohamad Shukri Abdul Manaf, and anita ahmad. “A Review on Determining Purity of Gold Using Sensor”. Journal of Tomography System and Sensor Application 5, no. 1 (December 29, 2022). Accessed December 22, 2024. http://tssa.my/index.php/jtssa/article/view/199.