ABD RAHIM MOHAMED, CHE, NIOO SIEW YEW, and ZAHARUDDIN AHMAD. “226Ra and 228Ra in Water Column of Peninsular Malaysia: Southern South China Sea”. Asian Journal of Chemistry 19, no. 6 (March 30, 2010): 4291–4296. Accessed April 18, 2025. https://asianpubs.org/index.php/ajchem/article/view/19886.