![](/img/cover-not-exists.png)
A study of quasi-experimental control group methods for estimating policy impacts
W.Robert Reed, Cynthia L. RogersVolume:
33
Year:
2003
Language:
english
Pages:
23
DOI:
10.1016/s0166-0462(01)00107-7
File:
PDF, 125 KB
english, 2003