Trace elements in South America aerosol during 20th century inferred from a Nevado Illimani ice core, Eastern Bolivian Andes (6350m asl) - Correia, Alexandre Lima; Freydier, Remi; Delmas, R. J; Simões, J. C.; Taupin, Jean-Denis; Duprè, B; Artaxo Netto, Paulo Eduardo (Atmospheric Chemistry and Physics, 2003)