Slaoui, F., and F. Erchiqui. “Evaluation of Grounding Resistance and Inversion Method to Estimate Soil Electrical Grounding Parameters F Slaoui, F Erchiqui”. The International Journal of Multiphysics, vol. 4, no. 3, Sept. 2010, pp. 201-15, doi:10.1260/1750-9548.4.3.201.