TY  - RPRT
TI  - Portable precision dc voltage-current transfer standard for electrometer calibration
AU  - G. Landis
AU  - M. Godwin
PY  - 1982
DO  - 10.1063/1.1137127
UR  - https://pubs.usgs.gov/publication/70011292
ID  - 70011292
ER  -