1. Optical Production of Large Area Patterns for Microelectronics;Milne,1978
2. An Advanced Step and Repeat Aligner for VLSI;Dey,1980
3. Grating Interferometry for Positioning the X-Y Stages of a Wafer Stepper;Berger,1984
4. A High Resolution Laser Scale Interferometer;Iwaoka,1984
5. Holograf, 2366 Walsh Avenue, Santa Clara, California 95051, USA