Shi, Chunzhen, Hongman Zhang, Shuang Li, Hongbo Zheng, Qing Xu, and He Huang. 2013. “HPLC Based Metabolic Profiling of Rhizopus Oryzae for Fumaric Acid Production Using Ammonia As a Neutralizing Agent”. Asian Journal of Chemistry 25 (15):8467-70. https://doi.org/10.14233/ajchem.2013.14791.