Search Results Use the search box below to revise your search, or start a new search. Studies (3) Variables Publications Your query returned 3 studies. Sort by: Study Relevance Title A-Z Released/Updated Time Period Most Cited in ICPSR Bib. Variable Relevance 1. Differences in the Validity of Self-Reported Drug Use Across Five Factors in Indianapolis, Fort Lauderdale, Phoenix, and Dallas, 1994 (ICPSR 2706) Rosay, Andre B.; University of Maryland at College Park; Herz, Denise C. 2. Estimating the Elasticities of Demand for Cocaine and Heroin with Data from 21 Cities from the Drug Use Forecasting (DUF) Program, 1987-1991 (ICPSR 6567) Caulkins, Jonathan P. 3. Criminal Histories and Criminal Justice Processing of Drug Use Forecasting (DUF) Sample Members in Washington, DC, 1989-1991 (ICPSR 6122) Carver, Jay; Wish, Eric; Smith, Douglas A.; et al.