@article{sial_ferreira_dealmeida_romano_parente_dacosta_santos_2000,  title={Carbon isotope fluctuations in Precambrian carbonate sequences of several localities in Brazil},  volume={72},  ISSN={0001-3765},  url={https://doi.org/10.1590/S0001-37652000000400006},  DOI={10.1590/S0001-37652000000400006},  number={4},  journal={Anais da Academia Brasileira de Ciências},  publisher={Academia Brasileira de Ciências},  author={SIAL, ALCIDES N. and FERREIRA, VALDEREZ P. and DEALMEIDA, AFONSO R. and ROMANO, ANTONIO W. and PARENTE, CLOVIS V. and DACOSTA, MARCONDES L. and SANTOS, VICTOR H.},  year={2000},  month={Dec},  pages={539–558} }