1. Anaerobic thermophilic digestion of manure at different ammonia loads: effect of temperature;Angelidaki;Water Research,1994
2. Fiber (acid detergent) and lignin in animal feed (official method 973.18) official methods of analysis of AOAC International;AOAC,1997
3. Official method 990.03 Protein (crude) in animal feed, combustion method;AOAC,2005
4. Protein (crude) in animal feed (official method 990.03), combustion method official methods of analysis of AOAC International;AOAC,2005
5. Amylase-treated neutral detergent fiber in feeds (official method 2002-04), using refluxing in beakers or crucibles Official methods of analysis of AOAC International;AOAC,2006