TIDARUT VICHAIDID; THONGCHAI SOODPRASERT; NATNALIN SASTRI; CHUTIMA OOPATHUM; PICHET LIMSUWAN. Determination of U, Th and K in Sediments and Fossil Collected from Mae Moh Mine Using Gamma-Ray Spectrometry and Neutron Activation Analysis (NAA). Agriculture and Natural Resources, Bangkok, Thailand, v. 42, n. 5, p. 333–339, 2008. Disponível em: https://li01.tci-thaijo.org/index.php/anres/article/view/244616. Acesso em: 10 oct. 2026.