Automated image analysis of sand particles shape for describing hominin-bearing sediments in an Early and Middle Pleistocene site (Gran Dolina, Sierra de Atapuerca, Spain) - Campaña Lozano, Isidoro; Benito-Calvo, Alfonso; Pérez-González, Alfredo; Bermúdez de Castro, José María; Carbonell, Eudald (2016)