1. Janz GJ (1961) In: Ives DJG, Janz GJ (eds) Reference electrodes. Academic Press, New York
2. Bates RG, Bower VE (1954) J Res Nat Bur Stand 53:283–290
3. Buck RP, Rondinini S, Covington AK, Baucke FGK, Brett CMA, Camoes MF, Milton MJT, Mussini T, Naumann R, Pratt KW, Spitzer P, Wilson GS (2002) Measurement of pH. Definition, standards, and procedures (IUPAC Recommendations 2002). Pure Appl Chem 74:2169–2200
4. Bates RG (1973) Determination of pH, 2nd edn. Wiley, New York
5. Brewer PJ, Brown RJC, Gonzaga FB, Hongyu X, Bing W, Spitzer P, Jakobsen PT, Champion R, Fisicaro P, Stoica D, Ohata M, Vyskocil L, Mariassy M, Pratt K, Monroy M, Reyes A, Kozlowski W, Kardash E, Ivanova D, Camoes MF, Lee H, Hwang E (2011) Report on CCQM-P37.1. Preparation of Ag/AgCl electrodes for Harned cell measurements. http://www.bipm.org/en/committees/cc/ccqm/