Modelling the long-term dynamics of radionuclides in rivers A. A. Bulgakov, A. V. Konoplev, V. V. Kanivets and O. V. Voitsekhovich Radioprotection, 37 C1 (2002) C1-649-C1-654 Published online: 25 March 2010 DOI: 10.1051/radiopro/2002182