Rajab, Nawal A., Alaa A. Abdul Rassol, Shereen M. Assaf, and Al-sayed A. Sallam. 2014. “PREPARATION AND EVALUATION OF FENTANYL TRANSDREMAL PATCHES USING LIDOCAINE AS A MODEL DRUG AND AZELAIC ACID AS A PENETRATION ENHANCER”. International Journal of Pharmacy and Pharmaceutical Sciences 6 (7):615-20. https://journals.innovareacademics.in/index.php/ijpps/article/view/1999.