@article { persalcos2016, author = "Perdigćo, Joćo and Salgado, Rui and Costa, Maria Joćo and Dasari, Hari Prasad and Sanchez-Lorenzo, Arturo", title = "Variability and trends of downward surface global solar radiation over the Iberian Peninsula based on ERA-40 reanalysis", year = "2016" }