Hu, Gang, Zhi-Qiang Xu, Fu-Xing Xie, Lin Hu, and Shi-Sheng Ni. 2010. “B-Z Oscillating Reactions Catalyzed by a Tetraazamacrocyclic Nickel(II) Complex in the Pyruvic Acid-Sulfuric Acid System”. Asian Journal of Chemistry 12 (4):1031-36. https://asianpubs.org/index.php/ajchem/article/view/23125.