1. The determination and value of pH;Sørensen;Comp. Rend. Trav. Lab. Carlsberg,1909
2. pH monitoring: A review;Vonau;J. Solid State Electrochem.,2006
3. Electrometric pH-Determinations, Theory and Practice;Bates,1954
4. Ueber elektrische Phasengrenzkräfte;Haber;Zeitschr. f. Physik. Chem.,1909
5. pH Measurements.—Fundamentals, Methods, Applications, Instruments;Galster,1991