Lei*, Yingjie, Shuying Liu, Hao Li, and Mei Ding. “Microwave Promoted Synthesis of 2,5-Diaryl-1,3,4-Oxadiazoles Using Melamine Formaldehyde Resin Supported Sulfuric Acid”. Asian Journal of Chemistry 25, no. 18 (December 13, 2013): 10454–10456. Accessed July 23, 2024. https://asianpubs.org/index.php/ajchem/article/view/25_19_98.