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Autor:
Renato Pereira de Freitas, Ricardo Tadeu Lopes, Valter Souza Felix, Paula J.M. Aranha, Pedro C.S. Heringer, Marcelo O. Pereira, Marcelino J. Anjos
Publikováno v:
Applied Radiation and Isotopes. 166:109409
In this work, 960 reis coins from the period when Brazil was a colony of Portugal were analyzed using the x-ray fluorescence (XRF) spectrometry. The history of these coins, dated between the end of the 17th century and the beginning of the 19th centu