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Xie, Yu; Brand, Jenni E.; Jann, Ben (2012). Estimating Heterogeneous Treatment Effects with Observational Data. Sociological methodology, 42(1), pp. 314-347. Sage Publications 10.1177/0081175012452652
Xie, Yu; Brand, Jennie; Jann, Ben (2011). Estimating Heterogeneous Treatment Effects with Observational Data (PSC Research Report No. 11-729). Ann Arbor: University of Michigan Press
