Sánchez Fabre, Miguel. “Assessment and Classification of the Interannual Variability: Application in the Ebro Basin”. Anales de Geografía de la Universidad Complutense 38, no. 1 (May 28, 2018): 137–160. Accessed July 12, 2026. https://revistas.ucm.es/index.php/AGUC/article/view/60472.