@INPROCEEDINGS {11042,
author={B. Feitor and R. F. S. Caldeirinha and T.  Fernandes and D. Ferreira and N. Leonor},
doi={},
booktitle={Loughborough Antennas and Propagation Conf. – LAPC},
title={Estimation of Dielectric Concrete Properties from Power Measurements at 18.7 and 60 GHz},
year={2011},
month={November},
volume={1},
pages={1-4} 
}