@article{vasconcelos_onoe_kawashita_soares_teixeira_2002,  title={40Ar/39Ar geochronology at the Instituto de Geociências, USP: instrumentation, analytical procedures, and calibration},  volume={74},  ISSN={0001-3765},  url={https://doi.org/10.1590/S0001-37652002000200008},  DOI={10.1590/S0001-37652002000200008},  number={2},  journal={Anais da Academia Brasileira de Ciências},  publisher={Academia Brasileira de Ciências},  author={VASCONCELOS, PAULO M. and ONOE, ARTUR T. and KAWASHITA, KOJI and SOARES, ADALBERTO J. and TEIXEIRA, WILSON},  year={2002},  month={Jun},  pages={297–342} }