Zhao, Yanmei, Zhouyu Wang, Zhenju Jiang, Hualin Feng, Li Liu, and Ju Wang. 2014. “An Efficient Method for Synthesis of Thiohydantoins With a-Amino Esters Under Microwave Irradiation”. Asian Journal of Chemistry 26 (4):1171-73. https://doi.org/10.14233/ajchem.2014.16119.