TY - RPRT TI - An approach to accurate x-ray mask measurements in a scanning electron microscope AU - Postek, Michael T AU - Larrabee, Robert D AU - Keery, William J PY - 1989 PB - National Institute of Standards and Technology CY - Gaithersburg, MD SN - NIST IR 89-4047 DO - 10.6028/NIST.IR.89-4047 ER -