Q. . Yang, Z. . Fei, and C. . Huang, “Betulin terpenoid targets OVCAR-3 human ovarian carcinoma cells by inducing mitochondrial mediated apoptosis, G2/M phase cell cycle arrest, inhibition of cell migration and invasion and modulating mTOR/PI3K/AKT signalling pathway”, Cell Mol Biol (Noisy-le-grand), vol. 67, no. 2, pp. 14–19, Sep. 2021.