External microbeam set-up at the CNA (Sevilla) and its application to the study of Tartesic jewellery - Ontalba Salamanca M., Ager F., Ynsa M., Gómez Tubío B., Respaldiza M., García López J., Fernández-Gómez F., De la Bandera M., Grime G. (Nuclear Instruments & Methods In Physics Research Section B-Beam Interactions With Materials And Atoms, 2001)