International Journal of Coal Geology
International Journal of Coal Geology > 1999 > 40 > 1 > 1-25
International Journal of Coal Geology > 2003 > 54 > 1-2 > 79-94
International Journal of Coal Geology > 1999 > 40 > 1 > 1-25
International Journal of Coal Geology > 2003 > 54 > 1-2 > 79-94