Gh-Bedewy, W., O. Salih, and A. Ahmad. “Synthesis of New Pyrazolines Derivatives from Coumarine Compounds”. Journal of Education and Science (JES) 24, no. 3 (November 30, 1999): 34–40. Accessed August 4, 2025. https://rjps.uomosul.edu.iq/index.php/edusj/article/view/17708.