1. Dorofeenko, G. N. Russ. Chem. Rev. 1982, 51, 469. [Usp. Khim.1982, 51, 817.] (b) Balaban, A. T.
2. Academic Press: New York, 1982, Vol. 2, Seuppl. b Nógrádi, M. In Science of Synthesis: Houben-Weyl Methods of Molecular Transformations
3. Georg Thieme Verlag: Stuttgart, 2003, p. 201. c Balaban, T. S.
4. Georg Thieme-Verlag: Stuttgart, 2003, p. 11. d Drygina, O. V.
5. Garnovskii, A. D. Chem. Heterocycl. Compd. 1983, 19, 807. [Khim. Geterotsikl. Soedin.1983, 1011.] (f) Katritzky, A. R.