Selecting a Green Strategy on Extraction of Birch Bark and Isolation of Pure Betulin Using MonoterpenesAlexandr E. Grazhdannikov, Farid Chemat, Elvira E. Shults et al.|ACS Sustainable Chemistry & Engineering|2018Cited by 25
An approach to effective green extraction of triterpenoids from outer birch bark using ethyl acetate with extractant recycleSergey A. Popov, Elvira E. Shults, L. M. Kornaukhova et al.|Industrial Crops and Products|2017Cited by 21