1. V. N. Skurikhin and S. V. Shabaev, Methods for Determining Vitamin A, E, D and Carotene in Fodder, Biological Media, and Liverstock Products (A Handbook) [in Russian], Khimiya, Moscow (1996).
2. L. V. Prokhorova, N. P. Antonova, V. V. Shelestova, et al., Developing Unified Methods for the Analysis and Standardization of Drugs Based on Tykveol. Proceedings of the 6th Intern. Congr. [in Russian], St. Petersburg (2002), pp. 291–294.
3. V. V. Shelestova, Candidate (Pharm. Sci.) Thesis [in Russian], Moscow (2002).