1. Benzimidazole condensed ring systems. 1. Syntheses and biological investigations of some substituted pyrido[1,2-a]benzimidazoles (p 1087-1093)
Journal of Heterocyclic Chemistry Volume 25 Issue 4
Samia M. Rida, Farid S. G. Soliman, El-Sayed A. M. Badawey, E. El-Ghazzawi, O. Kader, Thomas Kappe
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http://dx.doi.org/10.1002/jhet.55702504R. Alan Aitken ab; J. I. G. Cadogan c; Ian Gosney b
Phosphorus, Sulfur, and Silicon and the Related Elements, Volume 101, Issue 1 - 4 April 1995 , pages 281 - 286
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http://dx.doi.org/10.1080/10426509508042528