HOLONEC, L.; RANGA, F.; CRAINIC, D.; TRUTA, A.; SOCACIU, C. Evaluation of Betulin and Betulinic Acid Content in Birch Bark from Different Forestry Areas of Western Carpathians. Notulae Botanicae Horti Agrobotanici Cluj-Napoca, [S. l.], v. 40, n. 2, p. 99–105, 2012. DOI: 10.15835/nbha4027967. Disponível em: https://www.notulaebotanicae.ro/index.php/nbha/article/view/7967. Acesso em: 2 oct. 2022.