Heavy metals in South America aerosol during 20th century from Illimani ice-core, Eastern Bolivian Andes A. Correia, R.J. Delmas, R. Freydier, J. Simoes, J.-D. Taupin, B. Dupré et P. Artaxo J. Phys. IV France, 107 (2003) 333-336 DOI: 10.1051/jp4:20030309