Levdansky, Vladimir Aleksandrovich, Natal’ya Viktorovna Garyntseva, and Aleksandr Vladimirovich Levdanskiy. 2023. “ESTERIFICATION OF BETULIN 3-ACETATE IN MELTS OF THE MALEIC AND LEVULINIC ACIDS”. Chemistry of Plant Raw Material, no. 4 (December), 361-65. https://doi.org/10.14258/jcprm.20230412656.