Castellanos, M. T., A.M. Tarquis, M.C. Morató, and A. Saa. “Forecast of Frost Days Based on Monthly Temperatures”. Spanish Journal of Agricultural Research 7, no. 3 (September 1, 2009): 513-524. Accessed February 24, 2025. https://sjar.revistas.csic.es/index.php/sjar/article/view/436.