Search Results Use the search box below to revise your search, or start a new search. Studies (1) Variables Publications Your query returned 1 studies. Series results are grouped under the most relevant study. Ungroup series results to view all 1 results. Sort by: Title A-Z Released/Updated Time Period Most Cited in ICPSR Bib. 1. Prevalence of Five Gang Structures in 201 Cities in the United States, 1992 and 1995 (ICPSR 2792) Klein, Malcolm W.; Maxson, Cheryl L.