by Papadopoulos, TA, Tsiamitros, DA and Papagiannis, GK
Reference:
T. Papadopoulos, D. Tsiamitros and G. Papagiannis, "Earth return admittances and impedances of underground cables in non-homogeneous earth", IET generation, transmission & distribution, vol. 5, no. 2, 2011, pp. 161–171.
Bibtex Entry:
@article{papadopoulos2011earth, title={Earth return admittances and impedances of underground cables in non-homogeneous earth}, author={Papadopoulos, TA and Tsiamitros, DA and Papagiannis, GK}, journal={IET generation, transmission & distribution}, volume={5}, number={2}, pages={161--171}, year={2011}, publisher={IET Digital Library} }