Comments - Instrumental Variables: Response to Angrist and Imbens
| Year of publication: |
1999
|
|---|---|
| Authors: | Heckman, James J. |
| Published in: |
Journal of human resources : JHR. - Madison, Wis : University of Wisconsin Press, ISSN 0022-166X, ZDB-ID 2191921. - Vol. 34.1999, 4, p. 828-837
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