Abdel-Aziz, S. A.-G., Ali, T. E.-S., El-Mahdy, K. M., & Abdel-Karim, S. M. (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