Mekesh, Y., G. A. Seitimova, Y. S. Ikhsanov, Y. A. Litvinenko, G. S. Burasheva, M. K. Nauryzbaev, and X. A. Aisa. “Development of a Method for Isolating Carotenoids from Tomato Mass”. International Journal of Biology and Chemistry, vol. 11, no. 2, Dec. 2018, pp. 124-8, doi:10.26577/ijbch-2018-2-335.