Levdansky, V. A., Garyntseva, N. V., & Levdanskiy, A. V. (2023). ESTERIFICATION OF BETULIN 3-ACETATE IN MELTS OF THE MALEIC AND LEVULINIC ACIDS. Chemistry of Plant Raw Material, (4), 361-365. https://doi.org/10.14258/jcprm.20230412656