KASENOV, R.Z.; DEMETS, O.V.; KARTBAYEVA, G.T.; ZHUMADILOV, S.S.; ALIEVA, M.R.; ZHUMABEKOVA, A.U.; YERGESH, A.A.; BAKIBAYEV, A.A. Extraction of betulin — natural triterpenoid from Kirgyz birch Betula kirghisorum, an endemic plant of the Republic of Kazakhstan. Fundamental and Experimental Biology, [S. l.], v. 93, n. 1, p. 14–18, 2019. DOI: 10.31489/2019bmg1/14-18. Disponível em: https://feb.buketov.edu.kz/bmg-vestnik/article/view/473. Acesso em: 1 dec. 2025.