Abd El-Aal, Hassan Abdou Kotb, Ahmed Mahmoud Abdel Mageed El-Khawaga, and Ali Ali Khalaf. 2014. “Friedel-Crafts Chemistry: Part 41. A New Facile Synthesis of indeno[1,2-C] Pyrazoles, 2H-benzo[g]indazoles and benzo[6,7]cyclohepta[1,2-c]pyrazoles via Friedel-Crafts Ring Closures”. European Journal of Chemistry 5 (2):277-86. https://doi.org/10.5155/eurjchem.5.2.277-286.976.