1. Adapa, P.K., Schoenau, G.J., Tabil, L.G., Sokhansanj, S., Crerar, B.J., 2003. Pelleting of fractionated alfalfa products. ASABE Paper No. 036069. ASABE, St. Joseph, MI.
2. ASABE Standard S593, 2006. Terminology and definitions for biomass production, harvesting and collection, storage, processing, conversion and utilization. ASABE, St. Joseph, MI.
3. ASABE Standard S319.3, 2003. Method of determining and expressing fineness of feed materials by sieving. ASABE, St. Joseph, MI.
4. ASABE Standard S269.4, 2003. Cubes, pellets, and crumbles-definitions and methods for determining density, durability, and moisture content. ASABE, St. Joseph, MI.
5. ASTM Standard D2013, 2004. Practice for preparing coal samples for analysis. ASTM International, West Conshohocken, PA.