TY  - JOUR
AU  - Juhn,Chinhui
AU  - Murphy,Kevin M.
AU  - Topel,Robert H.
TI  - Why Has the Natural Rate of Unemployment Increased over Time?
JF  - National Bureau of Economic Research Reprint Series
VL  - No. 1694
PY  - 1992
Y2  - February 1992
UR  - http://www.nber.org/papers/r1694
N1  - Author contact info:
Chinhui Juhn
Department of Economics
University of Houston
Houston, TX 77204-5882
Tel: 713/743-3823
Fax: 713/743-3798
E-Mail: cjuhn@uh.edu

Kevin M. Murphy
Booth School of Business
The University of Chicago
5807 S. Woodlawn Ave.
Chicago, IL  60637
Tel: 773/702-7280
Fax: 773/834-3554
E-Mail: murphy@chicagoBooth.edu

Robert H. Topel
Booth School of Business
The University of Chicago
5807 South Woodlawn Avenue
Chicago, IL  60637
Tel: 773/702-7524
Fax: 773/702-2699;708/798-5080 (home)
E-Mail: robert.topel@ChicagoBooth.edu
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