1. Finley, K.T., The Chemistry of the Quinonoid Compounds, Patai, S. and Rappoport, Z., Eds., Chichester: Wiley, 1988, vol. 2, part 1, chap. 11, p. 654.
2. Kobrina, L.S., Izv. Ross. Akad. Nauk, Ser. Khim., 2002, p. 1629.
3. Kovtonyuk, V.N., Kobrina, L.S., Gatilov, Yu.V., Bagryanskaya, I.Yu., Fröhlich, R., and Haufe, G., J. Chem. Soc., Perkin Trans. 1, 2000, p. 1929.
4. Kovtonyuk, V.N., Kobrina, L.S., Kataeva, O.M., and Haufe, G., Eur. J. Org. Chem., 2005, p. 1178.
5. Nair, V., Radhakrishnan, K.V., Sheela, K.C., and Rath, N.P., Tetrahedron, 1999, vol. 55, p. 14 199.