http://tags.library.upenn.edu/tag/estimation+firms+monthly_panel_data PennTags Feed for /tag/estimation+firms+monthly_panel_data PennTags Feed http://tags.library.upenn.edu/makerecord/url/10431 http://tags.library.upenn.edu/makerecord/url/10431 Dynamic Labor Demand Estimation and Stability of Coefficients: the Case of the Czech Republic