Fan1, Binglin, Yingling Wang2, Jie Yang2, Tianjun Ni2, and Quanmin Li1. 2014. “Spectrophotometric Determination of Tiopronin in Pharmaceutical Samples by Phosphorus Molybdenum Blue”. Asian Journal of Chemistry 26 (2):331-34. https://doi.org/10.14233/ajchem.2014.15375.