1. Grant, P.M., Cowan, C.F.N., Mulgrew, B., Dripps, J.H., 1989. Analogue and Digital Signal Processing and Coding. Chartwell-Bratt, Sweden.
2. A survey of the hough transform;Illingworth;Computer Vision, Graphics and Image Processing,1988
3. Three dimensional ground penetrating radar imaging using synthetic aperture time-domain focusing;Johansson;SPIE,1994
4. Kanasewich, E.R., 1975. Time Sequence Analysis in Geophysics. University of Alberta Press, Alberta, Canada, 2nd revised edn.
5. Nakhkash, M., 1996. Ground penetrating radar for the detection of subsurface hydrocarbon contamination. Internal Report, Dept. Of Elec. Eng., Univ. of Liverpool.