1. aHill, R. K.InThe Alkaloids;Manske, R. H. F., Ed.Academic Press:New York, 1967; Vol.9, pp483–515.
2. bDyke, S. F.; Quessy, S. N.InThe Alkaloids;Rodrigo, R. G. A., Ed.Academic Press:New York, 1981; Vol.18, pp1–98.
3. Erthrina and related alkaloids
4. dJackson, A. H.InChemistry and Biology of Isoquinoline Alkaloids;Phillipson, J. D.; Margaret, M. F.; Zenk, M. H., Eds.Springer:Berlin, Germany, 1985; pp62–78.
5. The Tetracyclic Erythrina Alkaloids