1. Feofilova, E.P., Pigmenty mikroorganizmov (Microorganismal Pigments), Moscow: Nauka, 1974.
2. Gabutdinov, M.S., Ryazantseva, I.N., Cherevin, I.F, Medvedeva, Ch.B., Valeeva, N.N., Kulikova, O.V., Andreeva, I.N., and Ogorodnikova, T.I., RF Patent No. 2129136, 1997.
3. Gareishina, A.Z., Petukhova, E.V., Yusupova, D.V., Lebedev, N.A., Chertilina, T.N., and Ponomareva, A.Z., RF Patent No. 2218381, Byull. Izobret., 2003, no. 34.
4. Montaner, B., Navarro, S., Piqué, M., Viaseca, M., Martinell, M., and Giralt, E., J. Pharmacol., 2000, vol. 131, pp. 585–593.
5. Llagostera, E., Soto-Cerrato, V., Joshi, R., Montaner, B., Gimenez Bonafe, R., and Perez-Tomas, R., Anticancer Drugs, 2005, vol. 16, pp. 393–399.