Journal of Urban Economics · 2003 · 151 citations · 32 references
Social InequalityEconomicsSpatial EconomicsPublic PolicyRegional Labor MarketsUrban EconomicsBusinessRegional ScienceRegional Fiscal Disparities
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Sample Selection Bias as a Specification Error
James J. Heckman · Econometrica · 1979 · 28.4K citations
Nachum Sicherman, Oded Galor · Journal of Political Economy · 1990 · 812 citations
Janice Fanning Madden · Urban Studies · 1981 · 417 citations
Labor Market Participation, Workplace Study, Social Sciences +18