TY  - RPRT
TI  - Group index and tome delay measurements of a standard reference fiber 
AU  - Dabielson, B L
AU  - Whittenberg, C D
PY  - 1988
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS IR 88-3091
DO  - 10.6028/NBS.IR.88-3091
ER  -