1. Fain, V.Ya., 9,10-Antrakhinony i ikh primenenie (9,10-Anthraquinones and Their Application), Moscow: Tsentr Fotokhimii Ross. Akad. Nauk, 1999.
2. Allevi, P., Anastasia, M., Bingham, S., Ciuffreda, P., Fiecchi, A., Cighetti, G., Miur, M., Scala, A., and Tyman, J., J. Chem. Soc. Perkin Trans. 1, 1998, no. 3, p. 575.
3. Thomson, R.H., Naturally Occurring Quinones, London: Academic, 1957.
4. Hiiro, K., Japan Analyst, 1963, vol. 12, no. 8, p. 703.
5. Babenko, N.L., Blokh, M.Sh., and Guseva, T.D., Zh. Anal. Khim., 1985, vol. 40, no. 6, p. 1028.