International Journal of Coal Geology
International Journal of Coal Geology > 2006 > 67 > 1-2 > 79-94
International Journal of Coal Geology > 2007 > 71 > 4 > 527-541
International Journal of Coal Geology > 2007 > 71 > 4 > 488-504
International Journal of Coal Geology > 2017 > 181 > C > 1-10