1. Department of Cartographic and Terrain Engineering, Higher Polytechnic School of ÁvilaHigher Polytechnic School of Ávila, University of Salamanca Hornos Caleros 50 05003 Ávila Spain
2. Área de PrehistoriaUniversitat de Rovir i Virgili (URV) Avignuda de Catalunya 35 43002 Tarragona Spain
3. Institut de Paleoecologia Humana i Evolució Social (IPHES) C/Marcellí Domingo s/n, Campus Sescelades URV (Edifici W3) E3 43002 Tarragona Spain
4. Unit Associated to CSIC, Departamento de PaleobiologiaMuseo de Ciencias Naturales calle José Gutiérrez Abascal, s/n 28006 Madrid Spain
5. Department of PrehistoryComplutense University Prof. Aranguren s/n 28040 Madrid Spain
6. Director of the C. A. I. Archaeometry and Archaeological AnalysisComplutense University Professor Aranguren s/n 28040 Madrid Spain