TY  - RPRT
TI  - A survey of the stability of optical flats 
AU  - Reeve, Charles P
AU  - Veale, Ralph C
PY  - 1973
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS IR 73-232
DO  - 10.6028/NBS.IR.73-232
ER  -