Félicité Kingne Kingne, Fabrice Tonfack Djikeng, Hermine Doungue Tsafack, Mallampalli Sri Lakshmi Karuna, and Hilaire Macaire Womeni, “Phenolic content and antioxidant activity of young and mature mango (Mangifera indica) and avocado (Persea americana) leave extracts”, ijp, vol. 10, no. 4, pp. 181–190, Dec. 2018.