Abdelhamid, Abdou Osman, Abdelgawad Ali Fahmi, and Karema Noury Mahmoud Halim. 2011. “Reactions With Hydrazonoyl Halides 65: Synthesis of Some New 1,3,4-Thiadiazoles and triazolino[4,3-a]pyrimidines Containing Pyrazole Moiety”. European Journal of Chemistry 2 (3):317-23. https://doi.org/10.5155/eurjchem.2.3.317-323.420.