On the limits of using combined U-series/ESR method to date fossil teeth from two Early Pleistocene archaeological sites of the Orce area (Guadix-Baza basin, Spain) - Duval, Mathieu; Falguères, Christophe; Bahain, Jean-Jacques; Grün, Rainer; Shao, Qingfeng; Aubert, Maxime; Dolo, Jean-Michel; Agustí, Jordi; Martínez Navarro, Bienvenido; Palmqvist, Paul; Toro, Isidro (2012)