1. Recidivism as a Feedback Process: An Analytical Model and Empirical Validation;Belkin;Journal of Criminal Justice,1973
2. Projected Percentages of U.S. Population with Criminal Arrest and Conviction Records;Christensen,1967
3. Crime in America;Clark,1970
4. United States Census, 1970;Department of Commerce,1970
5. Federal Offenders in the U.S. District Courts;Kirks,1969