@inproceedings{inproceedings09449445,
title   = {A frequency standard based on expanding cold atom cloud},
author = {Muller, S. T. and Santos, M. S. and Magalhães, Daniel Varela and Bebeachibuli, A. and Bagnato, Vanderlei Salvador},
year = {2004},
publisher = {University of São Paulo, Optics and Photonics Research Center - CEPOF},
booktitle   = {International Conference on Atomic Physics - ICAP}
}