TY  - RPRT
TI  - Direct estimation of diffuse gaseous emissions from coal fires: current methods and future directions
AU  - Mark A. Engle
AU  - Ricardo A. Olea
AU  - Jennifer M. K. O’Keefe
AU  - James C. Hower
AU  - Nicholas J. Geboy
PY  - 2013
DO  - 10.1016/j.coal.2012.10.005
UR  - https://pubs.usgs.gov/publication/70046458
ID  - 70046458
ER  -