International Journal of Coal Geology
International Journal of Coal Geology > 2003 > 54 > 1-2 > 57-68
International Journal of Coal Geology > 2010 > 81 > 4 > 211-226
International Journal of Coal Geology > 2003 > 54 > 1-2 > 57-68
International Journal of Coal Geology > 2010 > 81 > 4 > 211-226