Hits 1-2 within 2 documents
Rezension: Stephen L. Morgan und Christopher Winship, 2007: Counterfactuals and causal inference. Methods and principles for social research [review]
Source: Methoden, Daten, Analysen (mda), 2 (2008) 2. p.204-206
Quality procedures for survey transitions: experiments, time series and discontinuities [journal article]
Source: Survey Research Methods, 2 (2008) 3. p.123-141