1. Gilchrist, T.L., Heterocyclic Chemistry, Harlow: Longman, 1992, 2nd ed. Translated under the title Khimiya geterotsiklichesikh soedinenii, Moscow: Mir, 1996, p. 280.
2. Miyashita, M., Kumazawa, T., and Yoshikoshi, A., Chem. Lett., 1979, no. 2, p. 163.
3. Mashkovskii, M.D., Lekarstvennye sredstva (Medicinals), Moscow: Novaya Volna, 2002, vol. 1, pp. 117, 127, 199.
4. Vidal’. Lekarstvennye preparaty v Rossii: Spravochnik (Vidal’. Medicinals in Russia), Moscow: OVPEE-AstraFormServis, 2000, pp. B–142, B-684.
5. Registr lekarstvennyh sredstv Rossii (Russian Register of Medicinals), 2002, no. 9, pp. 600, 443, 93.