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Journal Article The Role of the Reference Technology in Measuring Productive Efficiency Get access S. Grosskopf S. Grosskopf Southern Illinois University Search for other works by this author on: Oxford Academic Google Scholar The Economic Journal, Volume 96, Issue 382, 1 June 1986, Pages 499–513, https://doi.org/10.2307/2233129 Published: 01 June 1986
Shawna Grosskopf (Sun,) studied this question.