Brittany Brand, Nick Pollock, Andrew Gase, Damiano Sarocchi, et al.. "The Erosive Nature of Pyroclastic Density Currents: A Summary of Findings From the 18 May 1980 Mt St Helens (USA) Deposits with Implications for Future Work" Cities on Volcanoes 9 Conference (2016)
Available at: http://works.bepress.com/brittany_brand/51/