1. Algeo JW. Equipment for converting the physical and complex molecular bond structures of natural feedstuffs for ruminant animals to different and less complex molecular bond structures thereof. 1974, US Patent No. 3817786.
2. Bender R. Method of treating lignocellulose materials to produce ruminant feed. 1984, US Patent No. 4136207.
3. Brown DB. Apparatus for discharge of pressure-cooked particulate or fibrous material. 1984, US Patent No. 4211163.
4. Pretreatment of corn stover by aqueous ammonia;Tae;Bioresource Technology,2003
5. Digestion of organic matter and nitrogen in ammoniated barley straw;Dryden;Animal Feed Science Technology,1983