International Journal of Coal Geology
International Journal of Coal Geology > 2006 > 68 > 3-4 > 196-204
International Journal of Coal Geology > 2006 > 68 > 3-4 > 127-134
International Journal of Coal Geology > 2006 > 68 > 3-4 > 205-222
International Journal of Coal Geology > 2006 > 68 > 3-4 > 223-232
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International Journal of Coal Geology > 2006 > 68 > 3-4 > 151-170