Shao, Tao, Jian Men, Shi Hu Jiao, Xiao Yan Ma, and Guo Wei Gao. 2015. “Microwave Accelerated Synthesis of 4-Phenylethynylphthalic Anhydride”. Asian Journal of Chemistry 27 (5):1644-46. https://doi.org/10.14233/ajchem.2015.17440.