Half-lives of self-purification for various isotopes in soils of the Chernobyl Exclusion ZoneM. Bondarkov, Yu. Ivanov, D. Bondarkov, S. Gaschak, A. Maksimenko, R. K. Chesser, B. Rodgers and M. ZheltonozhskayaRadioprotection, 44 5 (2009) 909-911DOI: https://doi.org/10.1051/radiopro/20095162