1. Method of Determining and Expressing Fineness of Feed Materials by Sieving. ASAE Standard S319, Agricultural Engineers Yearbook of Standards;ASAE,1983
2. Wafers, Pellets, and Crumbles – Definitions and Methods for Determining Density, Durability, and Moisture Content. ASAE Standard S269.3, Agricultural Engineers Yearbook of Standards;ASAE,1987
3. Influence of pelleting swine diets on metabolizable energy, growth and carcass characteristics;Baird;J. Anim. Sci.,1973
4. Effect of particle size of corn and grain sorghum on growth and digestibility by growing pigs;Giesemann;J. Anim. Sci.,1990