Dissolution studies about the aggregation-precipitation stages of the divalent europium in KBr crystals by photoacoustic technique E.V. Mejía-Uriarte, M. Navarrete, M. Villagrán-Muniz, E. Camarillo, J. Hernández A. and H. Murrieta S. J. Phys. IV France, 125 (2005) 277-279 DOI: 10.1051/jp4:2005125066