@INPROCEEDINGS {11774,
author={J. Cóias and J. Sanguino and P. O. Oliveira},
doi={},
booktitle={International Conf. on Localization and GNSS - ICL},
title={Attitude Determination Using the Ambiguity Filter with Single-Frequency L1 GPS Receivers},
year={2012},
month={June},
volume={--},
pages={-----} 
}