Brocca, L., Zucco, G., Moramarco, T., Morbidelli, R., 2013, Developing and testing a long-term soil moisture dataset at the catchment scale, Journal of hydrology (Amst.) 490 (2013): 144–151. doi_10.1016/j.jhydrol.2013.03.029,
URL: http://www.cnr.it/prodotto/i/245321

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