N. Phan, V. Pham, T. Phan, T. Pham, and H. Hoang, “Cytotoxic activities of synthesized curcumin and 3,4-Difluorinated curcumin against HepG2, LU-1 and KB cancer cell lines”, Science and Technology Development Journal, vol. 23, no. 4, pp. 786-792, Dec. 2020.