Bibliography
Freeman, Roger A. and Kaufmann, William J. III. Universe (New York , NY.: W. H. Freeman and Company, 2005, 7 th Edition).
Hubble, Edwin. A relationship between Distance and Radial Velocity among Extra-Galactic Nebulae (from the proceedings of the National Academy of Sciences Volumne15: March 15, 1929: Number 3
Kelsey, Linda J, Hoff, Darrel B., Neff, Johns, Astronomy: Activities and Experiments (University of Iowa Press, 1975)
Kleinbaum, David G. Applied Regression Analysis and other Multivariable Methods (Boston, MA.:PWS-KENT Publishing Company, 1988, 2 nd Edition).
Koo, David, C and Kron, Richard G. A Deep Redshift Survey of Field Galaxies, Space and Comments on the reality of the Butcher-Oemler Effect, Telescope Science Institute 3700 San Martin Drive Baltimore, MD , September 1987.
(Get this 15 page article only if you want an advanced discussion on the redshift.)
Yates, Daniels S. The Practice of Statistics (New York, NY.: W. H. Freeman and Company, 2003, 2 nd Edition)
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