Editors' introduction
| Year of publication: |
1982
|
|---|---|
| Authors: | Heckman, J. ; Singer, B. |
| Published in: |
Journal of Econometrics. - Elsevier, ISSN 0304-4076. - Vol. 18.1982, 1, p. 1-3
|
| Publisher: |
Elsevier |