Wheaton JM, Brasington J, Darby SE and Sear D. 2010. Accounting for Uncertainty in DEMs from Repeat Topographic Surveys: Improved Sediment Budgets. Earth Surface Processes and Landforms. 35 (2): 136-156. DOI: 10.1002/esp.1886.The software we wrote to implement the methods we developed and reported in the paper is available as an open source software both here and as online supplemental materials to the article on the journal's website.