Jun, Ren, Tao Ling, Ni Tianri, Hao Jianxiu, and Gao Yamei. 2011. “Pretreatment of Achnatherum Splendens by Soaking in Aqueous Ammonia”. Asian Journal of Chemistry 23 (10):4407-10. https://asianpubs.org/index.php/ajchem/article/view/10865.