1. Vavilov, S.I., Anichkov, N.N. and Bardin, I.P. (1970) Artichoke. Bolshaya Sovetskaya Enzik, T.3, Nauka, Moskow, 147 p.
2. Grossgeim, A.A. (1946) Artichoke. Plant Resources of the Caucasus-Baku. Maorif. 672 p.
3. Ermakov, A.I. and Arasimovich, V.V. (1972) Methods of Biochemical Research of Plants. Nauka, Moskow, Leningrad, 197 p.
4. Radkevich, O.N. and Shubina, L.N. (1935) Morphological Bases of the Phenomenon of Particulation in Betpakdala Xerophytes. Tr. SAGU, Ser. 8, Issue 25, 3-22.
5. Tamamshyan, S.G. (1963) Artichoke—Cynara L. In: Ansssr, M.-L., Flora of the USSR. T. XXVIII, 225-226.