TY - GEN AU - Frederick (Fritz) Schulz C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1995-01-01 05:01:00 DO - https://doi.org/10.6028/NIST.SP.500-232 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1995 TI - Open system environment (OSE): ER -