S. R. Shetty, S. A. A. F. Al-bayati, M. S. Hamed, and H. A. E. Abdemagyd, “Role of lycopene in the prevention of oral precancerous lesions. A review”, Eur Res J, vol. 3, no. 2, pp. 101–105, Jul. 2017, doi: 10.18621/eurj.289283.