@INPROCEEDINGS {296,
author={C. R. Paiva and J.  Figanier},
doi={},
booktitle={Simpósio de Electrónica das Telecomunicações},
title={Simple approximate analysis of shielded coupled microstrips with transverse anisotropic substrate},
year={1986},
month={May},
volume={2},
pages={xx-xx} 
}