1. Grigg, R. and Sridharan, V., Advanced in Cycloaddition. Curran, D.P., Ed., Leningrad: Jai Press, 1993, vol. 3, p. 161.
2. Padwa, A., Intramolecular 1,3-Dipolar Cycloaddition, Trost, B.M. and Eleming, J., Eds., Oxford: Pergamon, Press, 1991, p. 252.
3. Tsude, O. and Kanemasa, S., Adv. Heterocycl. Chem., 1989, vol. 45, p. 231.
4. Boger, D.L., Tetrahedron, 1983, vol. 39, p. 2869.
5. Feng, Z. and Lubell, W.D., J. Org. Chem., 2001, vol. 66, p. 1181.