1. Bandermann, L., Bareket, N., and Metheny (1983). ?Comparative feasibility study of two concepts for a space based astrometric satellite?, NASA Contractor Report 166403.
2. Black, D. C. (1980). Project Orion, A Design Study of a System for Detecting Extrasolar Planets. NASA SP-436, 174.
3. Black, D. C., and Brunk, W. E. (1980). ?An Assessment of Ground-Based Techniques for Detecting Other Planetary Systems?, NASA Conference Publication 2124 (in two volumes).
4. Dyer, J. W., Nishioka, K., Sobeck, C. K., Gatewood, G., Levy, E. H. (1987). ?Conceptual Design Considerations for the Astrometric Telescope Facility?, IAU Colloquium 100, Fundamentals of Astrometry (edited by I Pakvor and H. K. Eichhorn).
5. Gatewood, G. (1987). ?The Multichannel Astrometric Photometer and Atmospheric Limitations in the Measurement of Relative Positions?, Astron. J., 94, 213.