1. Mashkovskii, M.D., Lekarstvennye sredstva (Pharmaceutical Preparations), Moscow: Novaya Volna, 2005.
2. SanPiN (Sanitary Regulations and Standards) 2.3.2.2804-10: Additions and Changes no. 22 to SanPin (Sanitary Regulations and Standards) 2.3.2.1078-01: Hygienic Requirements for Safety and Nutritional Value of Food Products, Moscow, 2010.
3. Ricci, M.C. and Cross, R.F., J. Microcolumn Sep., 1993, vol. 5, no. 3, p. 207.
4. Kowalski, P., Plenis, A., Oledzka, I., and Konieczna, L., J. Pharm. Biomed. Anal., 2011, vol. 54, p. 160.
5. Hillaert, S. and Bossche, W., J. Pharm. Biomed. Anal., 2004, vol. 36, p. 437.