1. Standard Test Method for Lignin in Wood D 1106-56;American National Standards Institute and American Society for Testing and Materials,1977
2. Standard Test Methods for alpha-Cellulose in Wood D 1103-60;American National Standards Institute and American Society for Testing and Materials,1977
3. Nitrogen transformation during sludge composting;Bishop;BioCycle,1983
4. Methods of Wood Chemistry;Browning,1967
5. The Rutgers strategy for composting: process, desing and control;Finstein,1985