International Journal of Coal Geology
International Journal of Coal Geology > 2000 > 43 > 1-4 > 259-286
International Journal of Coal Geology > 2011 > 88 > 1 > 41-54
International Journal of Coal Geology > 2000 > 43 > 1-4 > 259-286
International Journal of Coal Geology > 2011 > 88 > 1 > 41-54