Photoacoustic Characterization of PC/PMMA blends doped with Eu(acac)3 D.T. Dias, R. Bonzanini, A.F. Rubira, E.C. Muniz, A.N. Medina, M.L. Baesso, L.A.O. Nunes et A.C. Bento J. Phys. IV France, 125 (2005) 387-390 DOI: 10.1051/jp4:2005125090