Choudhary, Ruplal, Arosha L. Umagiliyage, and John Haddock. 2012. “Aqua-Ammonia Pretreatment of Corn Stover for Enhancing Enzymatic Saccharification”. International Journal of Agricultural and Biological Engineering 5 (1). Beijing, China:56-61. https://ijabe.org/index.php/ijabe/article/view/548.