1. ANSI/ASTM standard D-1104,1956
2. ANSI/ASTM standard D-1106,1956
3. ANSI/ASTM standard D-1103,1960
4. Thermal uses and properties of carbohydrates and lignin;Shafizadeh,1976
5. Effect of inorganic salts on pyrolysis of wood, cellulose and lignin by differential thermal analy sis;Tang,1968