Kohda, Tetsuya, et al. “Vitamin E-Like Molecules Potentiate the Curcumin-Induced Suppression of Caco-2 Cell Proliferation”. International Journal of Pharmacological Research, vol. 6, no. 1, Feb. 2016, pp. 41-46, https://doi.org/10.7439/ijpr.v6i1.2802.