Using 239Pu as a tracer for fine sediment sources in the Daly River, Northern AustraliaR. Lal, L. K. Fifield, S.G. Tims, R.J. Wasson and D. HoweEPJ Web of Conferences, 91 (2015) 00006DOI: https://doi.org/10.1051/epjconf/20159100006