Juan A. Correa, "Innovation and Competition: An Unstable Relationship", 
Journal of Applied Econometrics, Vol. 27, No. 1, 2012, pp. 160-166.

This paper uses data from

Philippe Aghion, Richard Blundell, Nicholas Bloom, Rachel Griffith, and Peter
Howitt, "Competition and Innovation: An Inverted U Relationship",
Quarterly Journal of Economics, Vol. 120, No. 2, 2005, pp. 701-728.

The ABBGH data can be found at:

  http://www.stanford.edu/~nbloom/index_files/Page315.htm

The file abbgh-stata.zip contains abbgh_data.dta, a Stata data file from the
above URL.

The file program-and-data.zip contains three ASCII text files in DOS 
format. They are:

  abbgh_data.txt (same data as abbgh_data.dta)
  abbgh_variables.txt (list of variables in abbgh_data.txt)
  correa-prog.do (Stata program for results of this paper)

Unix/Linux users should use "unzip -a".