Zhu, Y., Fan, Y., Bi, C., Zhang, X., Zhang, P., & Yan, X. (2014). Synthesis, Characterization and Antitumor Studies of Two Copper(II) Schiff Base Complexes Derived from Glutathione and o-Vanillin. Asian Journal of Chemistry, 27(1), 47–50. https://doi.org/10.14233/ajchem.2015.16681