1. B.A. Martin, Cathodic Protection Theory and Practice—The Present Status, Coventry, 1982
2. NACE publication 10A190: Measurement Techniques Related to Criteria for Cathodic Protection of Underground or Submerged Steel Piping Systems, NACE, Houston, 1991
3. E. Escalante, in: Proceedings of the Measurement and Correction of Electrolyte Resistance in Electrochemical Tests, ASTM, Baltimore, 1988. pp. 180