TY  - RPRT
TI  - Frequency shifts due to ramsey type interrogation in atomic beam tubes 
AU  - Kartaschoff, P
AU  - Hellwig, Helmut
PY  - 1972
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS TN 612
DO  - 10.6028/NBS.TN.612
ER  -