1. Christov, M., Possibilities and Problems in the Hybridization of Cultivated Sunflower with Species of the Genus Helianthus, Helia, 1991, vol. 19, no. 15, p. 35–40.
2. Georgieva-Todorova, J., Interspecific Hybridization in the Genus Helianthus L., Zeitschrift Pflanzenzuchtung, 1984, vol. 93, pp. 265–279.
3. Gavrilova, V.A., Savchenko, N.A., Tolstaya, T.T., et al., The Use of Collection of Wild Perennial Helianthus L. Species for Heterozis Selection in Sunflower, Geneticheskie resursy kul’turnykh rastenii: Problemy mobilizatsii, inventarizatsii, sokhraneniya i izucheniya vazhneishikh sel’skokhozyaistvennykh kul’tur dlya resheniya prioritetnykh zadach selektsii (Genetic Resources of Cultivated Plants: Problems of Mobilization, Inventory, Conservation, and Study of the Most Important Crops for the Purposes of High Priority Selection), Dragavtzev, V.A, Ed., St. Petersburg: VIR, 2001.
4. Gavrilova, V.A., Anisimova, I.N., Rozhkova, V.T., et al., The Use of Wild Perennial Species for Creating of Introgressive Sunflower Lines, in Sovremennye problemy nauchnogo obespecheniya proizvodstva podsolnechnika (Modern Problems of Scientific Support for Sunflower Production), Proc. Int. Sci. Practical Conf., on the Occasion of the 120th Anniversary of Academician V.S. Pustovoit, Krasnodar: VNIIMK, 2006, pp. 110–123.
5. McClintock B. The Significance of Responses of the Genome to Challenge, Science, 1984, vol. 226, pp. 792–801.