1. G. Thomas, An Introduction to Medical Chemistry, John Wiley & Sons Inc., Chichester, 2000
2. B.G. Katzung, Basic Clinical Pharmacology, Appleton & Lange, 8th ed., USA, 2000
3. A. Kleeman, J. Engel, D.R. Kutscher, Pharmaceutical Substances, George Thieme Verlag, Stuttgart, New York, 1999
4. G. Butora, D.B. Olsen, S.S. Carroll, D.R. McMasters, C. Schmitt, J.F Leone, M. Stahlhut, C. Burlein, M. MacCoss, Bioorg. Med. Chem. 15 (2007) 5219
5. K. Danel, L.M. Larsen, E.B. Pedersen, G. Sanna, P.L. Colla, R. Loddo, Bioorg. Med. Chem. 16 (2008) 511