1. Standard test method for equilibrium moisture of coal at 96 to 97 percent relative humidity and 30°C;ASTM D1412,1980
2. Preparing Coal Samples for Microscopical Analysis by Reflected Light;ASTM D2797,1980
3. Microscopical Determination of the Reflectance of the Organic Components in a Polished Specimen of Coal;ASTM D2798,1980
4. Microscopical Determination of Volume Percent of Physical Components in a Polished Specimen of Coal;ASTM D2799,1980
5. Permeability of granite under high pressure;Brace;Journal of Geophysical Research,1968