1. A modified model for the fading signal at a mobile radio channel;Aulin;IEEE Trans. Vehicular Technology,1979
2. Barry , R.G. Chorley , R.J. Atmosphere, Weather and Climate Routledge New York, NY
3. The radio refractive index of air;Bean;Proceedings of the IRE,1962
4. Methods of solving noise problems;Bennett;Proceedings of the IRE,1956