This author has not been identified. Look up 'Roger Oria' in GoogleThis author has not been identified. Look up 'Jorge Otero Diaz' in GoogleThis author has not been identified. Look up 'Laura González' in GoogleThis author has not been identified. Look up 'Luis Botaya' in GoogleThis author has not been identified. Look up 'Manuel Carmona' in GoogleThis author has not been identified. Look up 'Manel Puig-Vidal' in Google