1. Annual Book of ASTM Standards. Gaseous Fuels; Coal and Coke, vol. 05.06;ASTM D2797-04,2005
2. Annual Book of ASTM Standards. Gaseous Fuels; Coal and Coke, vol. 05.06;ASTM D2798-05,2005
3. Annual Book of ASTM Standards. Gaseous Fuels; Coal and Coke, vol. 05.06;ASTM D3173-03,2005
4. Annual Book of ASTM Standards. Gaseous Fuels; Coal and Coke, vol. 05.06;ASTM D3174-04,2005
5. Annual Book of ASTM Standards. Gaseous Fuels; Coal and Coke, vol. 05.06;ASTM D3175-02,2005