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Journal Article Changing Technological Leadership and Industrial Growth Get access Edward Ames, Edward Ames Department of Economics, Purdue University, Indiana Search for other works by this author on: Oxford Academic Google Scholar Nathan Rosenberg Nathan Rosenberg Department of Economics, Purdue University, Indiana Search for other works by this author on: Oxford Academic Google Scholar The Economic Journal, Volume 73, Issue 289, 1 March 1963, Pages 13–31, https://doi.org/10.2307/2228401 Published: 01 March 1963
Ames et al. (Fri,) studied this question.