@article{ahmed_magalhães_bebeachibuli_müller_alves_ortega_weiner_bagnato_2008,  title={The Brazilian time and frequency atomic standards program},  volume={80},  ISSN={0001-3765},  url={https://doi.org/10.1590/S0001-37652008000200002},  DOI={10.1590/S0001-37652008000200002},  number={2},  journal={Anais da Academia Brasileira de Ciências},  publisher={Academia Brasileira de Ciências},  author={Ahmed, Mushtaq and Magalhães, Daniel V. and Bebeachibuli, Aida and Müller, Stella T. and Alves, Renato F. and Ortega, Tiago A. and Weiner, John and Bagnato, Vanderlei S.},  year={2008},  month={Jun},  pages={217–252} }