1. R. H. Thomson, Naturally Occurring Quinones, 2nd ed. (Academic, London, 1971), p. 257.
2. L. V. Boguslavskaya, Candidate’s Dissertation in Chemistry (Moscow, 1990).
3. L. V. Boguslavskaya, N. G. Khrapova, and O. B. Maksimov, Izv. Akad. Nauk SSSR, No. 7, 1471 (1985).
4. A. V. Lebedev, L. V. Boguslavskaya, D. O. Levitskiĭ, et al., Biokhimiya (Moscow) 53 (4), 598 (1988).
5. G. B. Elyakov, O. B. Maksimov, N. P. Mischenko, et al., RF Patent No. 2 137 472, Byull. Izobret. No. 26 (1999).