Chen, Wen-Tong, Rong-Hua Hu, Zhi-Gang Luo, and Hua-Long Chen. 2014. “Hydrothermal Synthesis and Crystal Structure of Non-Metallated Porphyrin”. Asian Journal of Chemistry 27 (1):158-60. https://doi.org/10.14233/ajchem.2015.16821.