@INPROCEEDINGS {2223,
author={J. Barata and D. Romão and M.P. Queluz and A. J. Rodrigues},
doi={},
booktitle={Workshop on Image Analysis for Multimedia Interactive Services WIAMIS},
title={Optimum Signal Combining Extraction of DWT-based Watermarks},
year={2004},
month={April},
volume={--},
pages={-----} 
}