Feng Ding, Cai, Mei Zhu, Xue-Mei Li, Shu Sheng Zhang, Hong Xu, and Ping-Kai Ouyang. 2010. “Synthesis and Crystal Structure of Tetra[pyridine]diperchlorato-K2 O-Cadmium(II)”. Asian Journal of Chemistry 18 (3):1685-89. https://asianpubs.org/index.php/ajchem/article/view/20856.