International Journal of Coal Geology
International Journal of Coal Geology > 2010 > 81 > 2 > 117-127
International Journal of Coal Geology > 2010 > 81 > 2 > 109-116
International Journal of Coal Geology > 2010 > 81 > 2 > 128-138
International Journal of Coal Geology > 2010 > 81 > 2 > 81-96
International Journal of Coal Geology > 2010 > 81 > 2 > 97-108