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IEEE Std 80-2000, "IEEE Guide for Safety in AC Substation Grounding", pp.71-80, 2000.
IEEE Std 142-2007, "IEEE Recommended Practice for Grounding of Industrial and Commercial Power Systems", IEEE Green Book, pp.161-181, 2007.
C. H. Choi, B. H. Lee and S. K. Paek, "Frequency-dependent grounding impedance of the counterpoise based on the dispersed currents", Journal of Electrical Engineering & Technology, Vol. 7, No.4, pp.589-596, 2012.
C. H. Choi and B. H. Lee, "An analysis on the Frequency-dependent grounding impedance based on the ground current dissipation of counterpoises in the two-layered soils", Journal of Electrostatics, Vol. 70, Iss. 2, pp.184-191, 2012.
C. H. Choi and B. H. Lee, "An analysis of conventional grounding impedance based on the impulsive current distribution of a horizontal electrode", EPSR, Vol.85, pp.30-37, 2012.
N. Mohamad Nor, A. Haddad, and H. Griffiths, "Performance of Earthing Systems of Low Reistivity Soils", IEEE Trans. PD, Vol.21, No.4, pp.2039-2047, 2006.
S. Sekioka, M. I. Lorentzou, M. P. Philippakou, and J. M. Prousalidis, "Current-Dependent Grounding Resistance Model Based on Energy Balance of Soil Ionization", IEEE Trans. PD, Vol.21, No.1, pp.194-201, Jan. 2006.
R. Alipio, S. Visacro, "Frequency Dependence of Soil Parameters: Effect on the Lightning Response of Grounding Electrodes", IEEE Trans. EMC, Vol.55, No.1, pp.132-139, 2013.
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B. H. Lee and K. B. Kim, "Frequency-dependent electrical parameters of soils as a function of the moisture content", J. Korean Institute of Illuminating and Electrical Installation Engineers (KIIEE), Vol.28, No.6, pp.68-74, 2014.
ASTM, "Standard Test Method for Field Measurement of Soil Resistivity Using the Wenner Four-Electrode Method", G 57-95a, pp.1-5, 2001.
KS C IEC 62561-7, Lightning protection system components (LPSC) - Part 7: Requirements for earthing enchancing compounds, Ed. 1.0, pp.6-8, 2013.
J. H. Choi, E. S. Cha, B. H. Lee, "Frequency-Dependent Resistivity and Relative Dielectric Constant of Soil on Water Content", J. KIIEE, Vol.24, No.1, pp.96-104, 2010.
S. Visacro, R. Alipio, M. H. Murta, C. Pereira, "The Response of Grounding Electrodes to Lightning Currents: The Effect of Frequency Dependence Soil Resistivity and Permittivity", IEEE Trans. EMC, Vol.53, No.2, pp.401-406, 2011.
K. B. Kim, B. H. Lee, H. K. Shin, Y. W. Yoo, "A Study on the Frequency Dependence of Electrical Parameters of Soil", Proc. 2014 Annual Conference of the Institute of Electrical Installation Engineers of Japan, pp.497-498, 2014.
S. Visacro, R. Alipio, "Frequency Dependence of Soil Parameters: Experimental Results, Predicting Formula and Influence on the Lightning Response of Grounding Electrodes", IEEE Trans. PD, Vol.27, No.2, pp.927-935, 2012.