Electrical Resistivity (ERT) geophysical prospection around the caves of Ojo Guareña Complex (Merindad de Sostocueva, Burgos, Spain) - Bermejo Albarrán, Lucía; Ortega Martínez, Ana Isabel; Guérin, Roger; Parés, Josep María; Benito-Calvo, Alfonso; Martín-Merino, Miguel Ángel; Aracil, Enrique; Maruri, Unai; Porres Benito, José Angel (2014)