Benzimidazole

Abdelhamid, A. O., H. F. Zohdi, M. M. M. Sallam, and N. A. Ahmed, "Reactions with Hydrazonoyl Halides XXVII: Synthesis of Some New Triazolo[4,3-a]benzimidazoles and Unsymmetrical Azine Derivatives", Phosph. Sulfur and Silicon, vol. 164, pp. 181, 2000.
Abdelhamid, A. O., H. F. Zohdi, A. H. H. Elghandour, N. M. Rateb, and A. Awad, "A Facile Synthesis of Pyrimido[2``,3``:5`,1`]pyrazolo[3`,4`:4,5]pyrimido[1,6-a]benzimidazoles", Third Biannual Conference on Chemistry, Chem.03, Cairo University, Egypt, March 2004.