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ZAHOREC, P.; PAPČO, J.; VAJDA, P.; GRECO, F.; CANTARERO, M.; CARBONE, D. Refined Prediction of Vertical Gradient of Gravity at Etna Volcano Gravity Network (Italy). Contrib. Geophys. Geod. 2018, 48 (4), 299-317. https://doi.org/10.2478/congeo-2018-0014.