Luminosity Functions
	• Exact parameters depend on sample.  SDSS and 2dF provide the best estimates. Typically slopes around a = -1, MB = -20 (note for reference that quasars by definition more luminous than -23).
	The normalization factor is on order of 0.01 per cubic Mpc. I’m not being too exact because sample biases and other subtleties exist.  Be more exact for your application.