External Validity in Policy Evaluations That Choose Sites Purposively
| Year of publication: |
2013
|
|---|---|
| Authors: | Olsen, Robert B. ; Orr, Larry L. ; Bell, Stephen H. ; Stuart, Elizabeth A. |
| Published in: |
Journal of Policy Analysis and Management. - John Wiley & Sons, Ltd., ISSN 0276-8739. - Vol. 32.2013, 1, p. 107-121
|
| Publisher: |
John Wiley & Sons, Ltd. |