1. Governmental Units Analysis Data
2. The Impact of the Voting Rights Act on Black and White Voter Registration in the South;James Alt;Quiet Revolution in the South,1994
3. A Unified Framework for Measuring Preferences for Schools and Neighborhoods;Patrick Bayer;Journal of Political Economy,2007
4. Bias Reduction in Standard Errors for Linear Regression with Multistage Samples;Robert M Bell;Survey Methodology,2002