1. ASTM (2008) Standard test methods for instrumental determination of carbon, hydrogen, and nitrogen in laboratory samples of coal and coke. ASTM D 5373
2. ASTM (2011) Standard practice for preparing coal samples for analysis. ASTM D 2013/D2013M-11
3. ASTM (2012) Standard practice for calculating coal and coke analyses from as-determined to different bases. ASTM D 3180
4. ASTM (2012) Standard classification of coal by rank. ASTM D 388
5. ASTM (2012) Standard test method for gross calorific value of coal and coke. ASTM D 5865