Review of water energy food nexus in Africa: Morocco and South Africa as case studiesLahcen El Youssfi, Wesley Doorsamy, Adil Aghzar, Sidi Imad Cherkaoui, Ihssan Elouadi, Alex Godoy Faundez and Diego Rivera SalazarE3S Web Conf., 183 (2020) 02002DOI: https://doi.org/10.1051/e3sconf/202018302002