TY  - JOUR
AU  - Angrist,J.D.
AU  - Imbens,Guido W.
AU  - Rubin,D.B.
TI  - Identification of Causal Effects Using Instrumental Variables
JF  - National Bureau of Economic Research Technical Working Paper Series
VL  - No. 136
PY  - 1993
Y2  - June 1993
UR  - http://www.nber.org/papers/t0136
L1  - http://www.nber.org/papers/t0136.pdf
N1  - Author contact info:
Joshua Angrist
Department of Economics
MIT, E52-353
50 Memorial Drive
Cambridge, MA  02142-1347
Tel: 617/253-8909
Fax: 617/253-1330
E-Mail: angrist@mit.edu

Guido Imbens
Graduate School of Business
Stanford University
655 Knight Way
Stanford, CA 94305
Tel: 617/384-7485
Fax: 617/495-7730
E-Mail: Imbens@stanford.edu
AB  - 
ER  -