text: As cited in Edwin R. Dean and Michael J. Harper , The BLS Productivity Measurement Program , revision of a paper presented at the Research in Income and Wealth Conference on New Direction in Productivity Analysis , March 20-21 , 1998 , Washington , D.C. : Bureau of Labor Statistics , July 5 , 2000 .
  
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  Edwin R. Dean and Michael J. Harper co-authored The BLS Productivity Measurement Program .