1. Albrecht, A. & Steinhardt, P. J.: 1982, Phys.Rev.Lett. 48, 1220
2. Alvarez, L. W., Buffington, A., Gorenstein, M. V., Mast, T. S., Muller, R. A., Orth, C. D., Smoot, G. S., Thornton, D. D., & Welch, W. J. 1974, Observational Cosmology: The Isotropy of the Primordial Black Body Radiation, UCBSSL 556/75 Proposal to NASA
3. Bardeen, J. M., Steinhardt, P. J. & Turner, M. S.: 1983, Phys.Rev.D
28, 679
4. Barney, R. D.: 1991, Illuminating Eng. Soc. 34, 34
5. Bennett, C. L.: 1991, Highlights Astron., in press