1. Electromagnetic Scattering from Buried Objects, SAND94-2361;Brock,1994
2. Ground penetrating radar for tunnel detection;Kuloglu,2010
3. Modeling of cylindrical objects by circular dielectric or conducting cylinders;Elsherbeni;IEEE Trans. Antennas Propagat.,1992
4. Field Computation by Moment Methods;Harrington,1968
5. Advanced Engineering Electromagnetics;Balanis,1989