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2. E. I. Kiryushina, in: Distribution and Natural Reserves of Useful Plants of Uzbekistan [in Russian], No. 1, Tashkent, 1974.
3. Yu. Nuraliev, Medicinal Plants [in Russian], Maorif, Dushanbe, 1989.
4. Ts. Khaidav and T. A. Men’shikova, Medicinal Plants in Mongolian Medicine [in Russian], Ulan-Bator, 1978.
5. M. I. Goryaev and N. A. Evdakova, Manual on Gas Chromatography of Organic Acids [in Russian], Nauka, Alma-Ata, 1977, 104.