A tracer test in a shallow heterogeneous aquifer monitored via time-lapse surface electrical resistivity tomography Monego, Martina ; Cassiani, Giorgio ; Deiana, Rita ; Putti, Mario ; Passadore, Giulia ; Altissimo, Lorenzo Abstract Publication: Geophysics Pub Date: July 2010 DOI: 10.1190/1.3474601 Bibcode: 2010Geop...75A..61M