239,240Pu in the soil at the Sarapan setelment of semipalatinsk nuclear test site. Journal of Geography and Environmental Management, [S. l.], v. 44, n. 1, p. 30–38, 2017. Disponível em: https://bulletin-geography.kaznu.kz/index.php/1-geo/article/view/344. Acesso em: 13 jul. 2026.