1. ASTM D5975–D5996, Standard Test Method for Determining the Stability of Compost by Measuring Oxygen Consumption;Anonymous;ASTM International, Book of Standards,2004
2. BSI 2000/1, Soil improvers and growing media;Anonymous,2000
3. BSI 2000/2, Soil improvers and growing media;Anonymous,2000
4. BSI 2001/1, Soil improvers and growing media;Anonymous,2001
5. BSI 2001/2, Soil improvers and growing media;Anonymous,2001