RACHANEE RUGIVARODOM. Concentration of Pb-214 and Bi-214 in the Atmosphere at Kasetsart University. Agriculture and Natural Resources, Bangkok, Thailand, v. 26, n. 1, p. 67–74, 1992. Disponível em: https://li01.tci-thaijo.org/index.php/anres/article/view/241756. Acesso em: 17 sep. 2026.