TY - GEN AU - Postek, Michael T AU - Larrabee, Robert D AU - Keery, William J C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1989-01-01 05:01:00 DO - https://doi.org/10.6028/NIST.IR.89-4047 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1989 TI - An approach to accurate x-ray mask measurements in a scanning electron microscope: ER -