Djeradi, H., A. Rahmouni, and A. Cheriti. “Theoretical Determination of Structures of Terpenoids 18a-Oleanane and A-Neo-18a-Oleanene”. Asian Journal of Chemistry 25, no. 7 (February 4, 2013): 3705–3710. Accessed July 20, 2024. https://asianpubs.org/index.php/ajchem/article/view/25_7_38.