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Combination of neutron activation, atomic absorption spectroscopy and conventional methods in the elemental analysis of silicate rocks

M. Freitas, M. Gouveia, M. J. Tavares, 1986 .

Validation of the uncertainty evaluation for the determination of metals in solid samples by atomic spectrometry

R. B. D. Bettencourt da Silva, M. Camões, J. Seabra e Barros, 1998 .