References
- Asch, T., and Morrison H.F., 1989, Mapping and monitoring electrical resistivity with surface and subsurface electrode arrays: Geophysics, 54, 235-244.
- Loke, M.H., 2004, Tutorial : 2-D and 3-D electrical imaging surveys: http://www.geoelectrical.com/coursenotes.zip.
- Oldenburg, D.W., and Li, Y., 1999, Estimating depth of investigation in DC resistivity and IP surveys: Geophysics, 64, 403-416.