6Alvin K. Benson,et al. Mapping groundwater contamination using resistivity and VLF geophysical method- A case study. Geophysics, 1997,62(1).
7Olivar A. L. DE Lima, Fabio F. S. Araujo. Subsurface contaminant tracking by ground- penetrating radar and spectral induced polarization. 1996,66th SEG NS6. 2.
8Maxwell A. Meju. Geoelectrieal investigation of old/abandoned,covered landfill sites in urban areas., model development with a genetic diagnosis approach. Journal of Applied Geophysics, 2000,44.
9S. S Abdul Nassir, M. H. Loke, C. Y. I.ee and M. N. M. Nawawi.Salt-water intrusion mapping by geoelectrical imaging surveys.Geophysical Prospecting, 2000,48.
