Muharni, M., 		Gunanda, F., 		Rahman, S., 		Yohandi, H., & 		Julinar, J.
2026 Jul 20.  Triterpenoid  betulinaldehyde and betulinic acid from  the stem bark of Dillenia ochreata (Miq.) Teijsm. & Binn. ex Martelli. Molekul. [Online] 21:2