1. Novikova, N.D., Kosm. Biol. Aviakosm. Med., 2001, vol. 34, no.4, pp. 32–40.
2. Shnyreva, A.V., Sizova, T.P., Bragina, M.P., Viktorov, A.N., and D’yakov, Yu.T., Mikol. Fitopatol., 2001, vol. 35, no.3, pp. 37–43.
3. Klintworth, R., Reher, H.J., Viktorov, A.N., and Bohle, D., Acta Astronaut., 1999, vol. 44, nos.7–12, pp. 569–578.
4. Metody pochvennoi mikrobiologii i biokhimii (Methods of Soil Microbiology and Biochemistry), Zvyaguntsev, D.G., Ed., Moscow: Mosk. Gos. Univ., 1991.
5. Bergey’s Manual of Determinative Bacteriology, 9th ed., Holt, J.G., Krieg, N.R., Sneath, P.H.A., Staley, J.T., and Williams, S.T., Eds., 9th edition, Baltimore: Williams and Wilkins, 1993. Translated under the title Opredelitel’ bakterii Berdzhi, Moscow: Mir, 1997.