El-Shazli, Ahmed, Georg Hörmann, Paul D. Wagner, and Nicola Fohrer. “Comparison of Water Balance Method and Alternative Evaporation Methods Applied to the Aswan High Dam Reservoir”. DIE ERDE – Journal of the Geographical Society of Berlin 149, no. 2-3 (September 27, 2018): 117-131. Accessed February 1, 2023. https://www.die-erde.org/index.php/die-erde/article/view/349.