Search Results Use the search box below to revise your search, or start a new search. Studies (2) Variables Publications Your query returned 2 studies. Series results are grouped under the most relevant study. Ungroup series results to view all results. Sort by: Title A-Z Released/Updated Time Period Most Cited in ICPSR Bib. 1. Examination of Crime Guns and Homicide in Pittsburgh, Pennsylvania, 1987-1998 (ICPSR 2895) Cohen, Jacqueline; Gorr, Wilpen 2. National Opinion Survey of Crime and Justice, 1995 (ICPSR 6720) Flanagan, Timothy J.; Longmire, Dennis R.