@inproceedings{inproceedingsf37ce355, title = {Determination of zinc and copper isotopic ratios using negative-mode electrospray ionization mass spectra}, author = {Moraes, M C B and Brito Neto, José Geraldo Alves and Lago, Claudimir Lucio do}, year = {2000}, booktitle = {International Mass Spectrometry Conference} }