, R. Barichello. 2013. Six Comparisons of Firm-level and Product-level Data. Applied Economics Letters. 20(4):382-385.
URL: http://dx.doi.org/10.1080/13504851.2012.707764
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, R. Barichello. 2013. Six Comparisons of Firm-level and Product-level Data. Applied Economics Letters. 20(4):382-385.
URL: http://dx.doi.org/10.1080/13504851.2012.707764