1. Agricultural Production Crops.
https://ec.europa.eu/eurostat/statistics-explained/index.php/Agricultural_production_-_crops#Potatoes_and_sugar_beet
. Accessed 02 Sept 2020
2. Yearly Statistics.
https://www.mapa.gob.es/es/estadistica/temas/publicaciones/anuario-de-estadistica/2018/default.aspx?parte=3&capitulo=07&grupo=3&seccion=2
. Accessed 02 Sept 2020
3. Pereira, L.S., Oweis, T., Zairi, A.: Irrigation management under water scarcity. Agric. Water Manag. 57, 175–206 (2002)
4. Althoff, D., Alvino, F.C.G., Filgueiras, R., Aleman, C.C., da Cunha, F.F.: Evapotranspiration for irrigated agriculture using orbital satellites. Bioscience Journal 35, 670–678 (2019)
5. Shitu, A., Tadda, M., Danhassan, A.: Irrigation water management using smart control systems: a review. Bayero Journal of Engineering and Technology 13, 2449–2539 (2018)