1. Caine, D., Organic Reactions, Dauben, W.G., Ed., New York: Wiley, 1976, vol. 23, p. 1.
2. Dryden, H.L., Jr., Organic Reactions in Steroid Chemistry, Fried, J. and Edwards, J.A., Eds., New York: Van Nostrand Reinhold, 1972, vol. 1, p. 23.
3. Odinokov, V.N., Galyautdinov, I.V., Ibragimova, A.Sh., Veskina, N.A., Khalilov, L.M., Dolgushin, F.M., and Starikova, Z.A., Mendeleev Commun., 2008, vol. 18, p. 291.
4. Odinokov, V.N., Galyautdinov, I.V., Ibragimova, A.Sh., Ves’kina, N.A., Khalilov, L.M., Dolgushin, F.M., and Starikova, Z.A., Khim. Geterotsikl. Soedin., 2008, p. 1339.
5. Tomas, J., Camps, F., Coll, J., Mele, E., and Pascual, N., Tetrahedron, 1992, vol. 48, p. 9809.