Шаблон:Katritzky2nd
Katritzky A.R.; Pozharskii A.F. (2000). Handbook of Heterocyclic Chemistry (Second изд.). Academic Press. ISBN 0080429882.
Katritzky A.R.; Pozharskii A.F. (2000). Handbook of Heterocyclic Chemistry (Second изд.). Academic Press. ISBN 0080429882.