1. The Chemistry of Heterocycles: Structure, Reactions, Syntheses, and Applications;Eicher,2003
2. Heterocyclic Compounds: Synthesis, Properties and Applications;Nylund,2010
3. Comprehensive Heterocyclic Chemistry III;Katritzky,2008
4. Handbook of Heterocyclic Chemistry;Katritzky,2010
5. Aromaticity as a Cornerstone of Heterocyclic Chemistry