This log-file documents the regression running behind Table 2 based on information collected by research assistants on subsample of 1,500 observations. Regressions use panel-count-data specification, regression number of references on year dummies, which are the variables of interest (giving percent increase 1985 to 1995 and 1995 to 2005).

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Field Value
Format SMCL
License CC-BY 4.0
Type text
Publication Date 2017
Last updated August 8, 2017
Created August 8, 2017