Alimzhanova, M., and D. Makhayeva. “Identification of Flavonoids in Plant Samples by Gas Chromatography-Mass Spectrometry With Pre-Derivatization”. International Journal of Biology and Chemistry, vol. 9, no. 1, June 2016, pp. 46-51, doi:10.26577/2218-7979-2016-9-1-46-51.