Feng, Guo-Dong, and Luan Jiang. 2011. “Hydrothermal Synthesis, Crystal Structure of Zinc(II) Complex of bis(2-Benzimidazole) and Aromatic Carboxylate Ligands”. Asian Journal of Chemistry 24 (3):1348-50. https://asianpubs.org/index.php/ajchem/article/view/8778.