1. Wright, J.B., Chem. Rev., 1951, vol. 48, p. 397.
2. Comprehensive Coordination Chemistry II, McCleverty, J.A. and Meyer, T.J., Eds., Amsterdam: Elsevier, 2004, vol. 1, p. 125.
3. Comprehensive Heterocyclic Chemistry III, Katritzky, A.R., Ramsden, C.A., Scriven, E.F.V., and Taylor, R.J.K., Eds., Amsterdam: Elsevier, 2008, vol. 4, p. 143.
4. Khalafi-Nezhad, A., Soltani Rad, M.N., Mohabatkar, H., Asrari, Z., and Hemmateenejad, B., Bioorg. Med. Chem., 2005, vol. 13, no. 6, p. 1931. doi 10.1016/j.bmc.2005.01.014
5. Shingalapur, R.V., Hosamani, K.M., and Keri, R.S., Eur. J. Med. Chem., 2009, vol. 44, no. 10, p. 4244. doi 10.1016/j.ejmech.2009.05.021