TY - GEN AU - Michael Postek AU - Robert Larrabee AU - William Keery C2 - NIST Interagency/Internal Report (NISTIR), National Institute of Standards and Technology, Gaithersburg, MD DA - 1989-01-01 00:01:00 LA - en M1 - 89 PB - NIST Interagency/Internal Report (NISTIR), 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 -