Takibayeva A.T., Kulakov I.V., Kapbassova A.S., Sydykova D.M., и Rakhimberlinova Zh.B. 2019. «OPTIMIZATION OF METHODS OF QUANTITATIVE DETERMINING FLAVANOIDS IN KNOTWEED RAW MATERIAL». Academic Scientific Journal of Chemistry, вып. 5 (октябрь):88-91. http://89.250.84.46/chemistry-technology/article/view/1493.