1. N. N. Firsov, Microbiology: Dictionary of Terms [in Russian], Drofa, Moscow, 2006.
2. S. P. Anand and N. Sati, Int. J. Pharm. Sci. Res., 4(7), 2496 – 2501 (2013).
3. O. E. Belikov and T. V. Puchkova, Preservatives in Cosmetics and Sanitary Media [in Russian], Shkola Kosmeticheskikh Khimikov, Moscow, 2003.
4. State Pharmacopoeia of the Russian Federation [in Russian], XIIIth Ed., Moscow, 2015; Federal Electronic Medical Library; http: // femb.ru / feml (accessed July 25, 2017).
5. European Pharmacopoeia, 8.0 Ed., 2014.