by Tsiamitros, DA, Papagiannis, GK and Dokopoulos, PS
Reference:
D. Tsiamitros, G. Papagiannis and P. Dokopoulos, "Equivalent resistivity approximation of two-layer earth structures for earth return impedance calculations", 2005 IEEE Russia Power Tech, 2005, pp. 1–7.
Bibtex Entry:
@conference{tsiamitros2005equivalent, title={Equivalent resistivity approximation of two-layer earth structures for earth return impedance calculations}, author={Tsiamitros, DA and Papagiannis, GK and Dokopoulos, PS}, journal={2005 IEEE Russia Power Tech}, pages={1--7}, year={2005}, organization={IEEE} }