1. Composition pétrographique des charbons humiques de l’USSR;Ammosov,1964
2. Test Method for Microscopical Determination of the Vitrinite Reflectance of Coal;ASTM Standard D2798-11a,2011
3. Test Method for Moisture in the Analysis Sample of Coal and Coke;ASTM Standard D3173-11,2011
4. Annual Book of ASTMStandards;ASTM Standard D3174-11,2011
5. Test Method for Volatile Matter in the Analysis Sample of Coal and Coke;ASTM Standard D3175-11,2011