1. TOPIC 5

2. Kelvin double bridge R 3a R4aR4a R3R3 R4R4 RxRx R2R2 R5R5

3. Kelvin double bridge with source and detector interchanged IxIx IsIs R3R3 R4R4 R 3a R 4a UxUx UsUs RxRx RsRs

4. DC comparator bridge IsIs IxIx NsNs NxNx RxRx RsRs PD OSC

5. Bridge based on an automatically balanced DC comparator Master PS Slave PS IsIs IxIx RsRs RxRx NsNs NxNx PD OSC

6. Transformer C-C bridge CsCs CxCx GxGx GaGa NaNa NsNs NxNx D

7. AC comparator C-C bridge NxNx NaNa NsNs D U IxIx IsIs IaIa CxCx GxGx GaGa CsCs

8. High voltage comparator C-C bridge

9. Shielding of AC comparator C-C bridge D U CxCx CsCs NxNx NsNs

10. Development of a four terminal-pair C-C bridge

11. Simple C-C bridge

12. Injection and combining network

13. Improved version

14. Four terminal pair R-R bridge and its application to QHE-based calibrations of resistance standards

15. R-R bridge

16. QHD with one pair of voltage probes as reference standard

17. QHD with three pairs of voltage probes as reference standard

18. Ricketts-Kemeny equivalent circuit of an 8-terminal QHD