1. Conductimetric Analysis at Radio-Frequency
2. Conductometric Analysts at Radio Frequency;Blake,1952
3. O. Klug,Hung.ScUnstr. No-s 14,16,17,18,19,20,21,22,23,24,26,27. The series is still in progress.
4. Die Hochfrequenztitration;Cruse,1957
5. Oscillometry and Conductometry;Pungor,1965