S. Ferwanah, Abdel-Rahman, Adel M. Awadallah, and Naveen A. Khafaja. 2010. “Reaction of Nitrilimines With Aromatic and Heterocyclic Ketoximes, Part 3: Synthesis of Substituted 1,2,4-Triazoles and 1,2,4,8-Tetraazaspiro[4,5]dec-2-Enes”. Asian Journal of Chemistry 13 (3):1203-9. https://asianpubs.org/index.php/ajchem/article/view/22761.