1. Klyba, L.V., Nedolya, N.A., Sanzheeva, E.R., and Tarasova, O.A., Russ. J. Org. Chem., 2017, vol. 53, p. 913. doi 10.1134/S1070428017060161
2. Campaigne, E., Comprehensive Heterocyclic Chemistry, Katritzky, A.R. and Rees, C.W., Eds.,1984, vol. 4, p.863.
3. Russell, R.K. and Press, J.B., Comprehensive Heterocyclic Chemistry II, Katritzky, A.R., Rees, C.W., and Scriven, E.F.V., Eds., 1996, vol. 2, p.679.
4. Schatz, J., Brendgen, T., and Schühle, D., Comprehensive Heterocyclic Chemistry III, Katritzky, A.R., Ramsden, C.A., and Taylor, R.J.K., Eds., 2008, vol. 3, p.931.
5. Sperry, J.B. and Wright, D.L., Curr. Opin. Drug Discovery Dev., 2005, vol. 8, p.723.