1. Martins, E.R., D.M. Castro, D.C. Castellani, and J.E. Dias. 1995. Plantas medicinais. Viçosa: UFV. 220p.
2. Simões, C.M.O., E.P. Schenkel, G. Gosmann, J.C.P. Mello, L.A. Mentz, and P.R. Petrvick. 2003. Farmacognosia: da planta ao medicamento. Porto Alegre/Florianópolis, 5. ed., Editora da UFRGS/Editora da UFSC.
3. Chang, H.-C., F.-R. Chang, Y.-C. Wu, and Y.-H. Lai. 2004. Anti-cancer effect of liriodenine on human lung cancer cells. The Kaohsiung Journal of Medical Sciences 20 (8).
4. Cahen, Raymond L., and Kristen Tvede. 1952. Homatropine methylbromide: a pharmagological reevaluation. Journal of Pharmacology and Experimental Therapeutics 105 (2): 166–177.
5. Brainer-Lima, P.T. 1997. Opióides e receptors de membrane cellular. Revisão atualizada. Neurobiologia 4: 149–158.