TY - GEN AU - Danielson, B. AU - Whittenberg, C. C2 - NIST Interagency/Internal Report (NISTIR), National Institute of Standards and Technology, Gaithersburg, MD DA - 1988-07-01 DO - https://doi.org/10.6028/NBS.IR.88-3091 LA - en PB - NIST Interagency/Internal Report (NISTIR), National Institute of Standards and Technology, Gaithersburg, MD PY - 1988 TI - Group index and time delay measurements of a standard reference fiber ER -