1. ASTM International (2002a) Test methods for total sulfur in the analysis sample of coal and coke; ASTM Standard D3177-02. ASTM International, West Conshohocken
2. ASTM International (2002b) Test methods for forms sulfur in the analysis sample of coal and coke; ASTM Standard D2492-02. ASTM International, West Conshohocken
3. ASTM International (2011a) Test method for moisture in the analysis sample of coal and coke; ASTM Standard D3173-11. ASTM International, West Conshohocken
4. ASTM International (2011b) Test method for ash in the analysis sample of coal and coke; ASTM Standard D3174-11. ASTM International, West Conshohocken
5. ASTM International (2011c) Test method for volatile matter in the analysis sample of coal and coke; ASTM Standard D3175-11. ASTM International, West Conshohocken