Product market competition, R&D composition and growth
链接:http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6VB1-4XPXT8V-1&_user=10&_coverDate=01%2F31%2F2010&_alid=1380216877&_rdoc=1&_fmt=high&_orig=search&_cdi=5913&_sort=r&_docanchor=&view=c&_ct=87316&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&md5=79ea0c436f09f88fb0aa18a72f2684fd


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