共 102 条
[1]
Ahmed Hachicha., 2008, International Journal of Economic Perspectives, V2, P1
[4]
[Anonymous], 2011, EUR COMP REP 2011
[8]
Baldwin CY, 1997, HARVARD BUS REV, V75, P84
[9]
Behrens V., 2017, Innovation activities of firms in Germany: Results of the German CIS 2012 and 2014 background report on the surveys of the Mannheim Innovation Panel conducted in the years 2013 to 2016