@INPROCEEDINGS {8972,
author={E.C. Pinheiro and O. Postolache and P.M. GirĂ£o},
booktitle={International Conf. of the IEEE Engineering in Medicine and Biology Society - EMBC},
title={Online Heart Rate Estimation in Unstable Ballistocardiographic Records},
year={2010},
month={September},
volume={I},
pages={939-942} 
}
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