Levitt, Steven D <br/><br/>
Catching cheating students / 
Steven D. Levitt and Ming-Jen Lin 
 - Cambridge  NBER  2015 
 - 32p 
 - NBER Working Paper ;  21628 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>NBERWP 21628<br/>E15713.pdf