TY  - JOUR 
T1  - High spatial resolution analysis of Pb and U isotopes for geochronology by laser ablation multi-collector inductively coupled plasma mass spectrometry (LA-MC-ICP-MS)
JO  - Anais da Academia Brasileira de Ciências
A1  - Bühn, Bernhard
A1  - Pimentel, Márcio M.
A1  - Matteini, Massimo
A1  - Dantas, Elton L.
SN  - 0001-3765
UL  - 10.1590/S0001-37652009000100011
VL  - 81 
Y1  - 2009
PB  - Brasil 
ER  -