Abdel-Aziz, Salah Abdel-Ghaffar, Tarik El-Sayed Ali, Kamilia Mohamed El-Mahdy, and Somaia Mohamed Abdel-Karim. 2011. “Synthesis and Antimicrobial Activities of Some Novel Bis-Pyrazole Derivatives Containing a Hydrophosphoryl Unit”. European Journal of Chemistry 2 (1):25-35. https://doi.org/10.5155/eurjchem.2.1.25-35.208.