Yan Qiu, Ming, Ji Chang Zhang, Wei Yun Shi, Qing Chao Jia, and Yong Sheng Niu. 2012. “Synthesis and Characterization of Azo Aromatic Diacyl Chlorides”. Asian Journal of Chemistry 24 (5):2295-97. https://asianpubs.org/index.php/ajchem/article/view/9003.