@INPROCEEDINGS {10918,
author={T. Varum and J. M.  Matos and P. Pinho and R. Abreu},
doi={},
booktitle={Conf. on Telecommunications  - ConfTele},
title={Microstrip antenna for vehicular communications with improved axial ratio band},
year={2011},
month={April},
volume={},
pages={1-4} 
}