Ahmad, F. (2010) “Spectroscopic Data of 3-O-Acetyl-betulinic Acid: An Antitumor Reagent”, Asian Journal of Chemistry, 22(4), pp. 3186–3192. Available at: https://asianpubs.org/index.php/ajchem/article/view/11531 (Accessed: 23 July 2024).