M. Awadallah, Adel. 2010. “Synthesis of Schiff Bases, Oximes and Hydrazones of 1,2,4-Oxadiazole and 1,2,4-Triazoles”. Asian Journal of Chemistry 18 (3):2151-58. https://asianpubs.org/index.php/ajchem/article/view/20969.