@INPROCEEDINGS {15194,
author={N. Leonor and R. F. S. Caldeirinha and T.  Fernandes and D. Ferreira},
doi={0},
booktitle={URSI Seminar of the Portuguese Committee},
title={A ray tracing based model using point scatterers for doubly selective radio channels},
year={2011},
month={November},
volume={1},
pages={1-4} 
}