http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
a briefing to the U.S. Department of Justice
Copy of presentation slide printed on page opposite numbered page giving explanation.
"Complete results are contained in Granting felons probation: public risks and alternatives by Joan Petersilia [and others] ..." P.1.