1. Carbon dioxide emissions from vegetation-kill zones around the resurgent dome of Long Valley caldera, eastern California, USA;Bergfeld;Journal of Volcanology and Geothermal Research,2006
2. An empirical function to estimate the depths of linear hot sources: laboratory modeling and field measurements of lava tubes;Berthelote;Bulletin of Volcanology,2007
3. U.S. Geological Survey coal quality (COALQUAL) database; version 2.0;Bragg,1998
4. Engle, M.A., Olea, R.A., Hower, J.C., Stracher, G.B., Kolker, A., in press. Methods to quantify diffuse CO2 emissions from coal fires using unevenly distributed data. In Stracher, G.B., Prakash, A., Sokol, E.V. (Eds.), Coal and Peat Fires: A Global Perspective, Volume 2: Photographs and Multimedia Tours, Elsevier.
5. Phase I report of investigation — Wyoming mine fire control study. Unpublished report submitted to State of Wyoming Department of Environmental Quality, Land Quality Division;Goodson and Associates,1986