Polemio M. (1), O. Petrucci (2), L. Gatto (3), 2003, DATABASE AND CHARACTERISATION OF DROUGHT EFFECT ON GROUNDWATER, EGS-AGU-EUG Joint Assembly, Nice, 6-11 April 2003,
URL: http://www.cnr.it/prodotto/i/262212

Data from https://intranet.cnr.it/people/