3S. E. Laubach, R. A. Marrett, J. E. Olson, A. R. Scott Characteristics and Origins of Coal Cleat: A Review In- ternational Journal of Coal Geology [ J ]. Amsterdam, Netherlands, 1998 (35) : 175 - 207.
4G. K. W. Dawson, J. S. Esterle. Controls on Coal Cleat Spacing International Journal of Coal Geology [ J ]. Am- sterdam Netherlands,2010(82) :213 -218.
5Wiffrido Solano -Aeosta, Maria Mastalerz, Arndt Sehim- melmann Cleats and Their Relation to Geologic linea- ments and Coalbed Methane Potential in Pennsylvanian Coals in Indiana International Journal of Coal Geology [J]. Amsterdam Netherlands,2007 (72) : 187 - 208.
6Md. Rafiqul Islam, Daigoro Hayashi Geology and Coal Bed Methane Resource Potential of the Gendwana Barapukuria Coal Basin, Dinajpur, Bangladesh International Journal of Coal Geology [ J ]. Amsterdam Netherlands, 2008 ( 75 ) : 127 - 143.