INDUSTRY EFFECTS AND APPROPRIABILITY MEASURES IN THE STOCK MARKETS VALUATION OF R-AND-D AND PATENTS

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COCKBURN, I
GRILICHES, Z
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02 ;
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页码:419 / 423
页数:5
相关论文
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[4]   MARKET VALUE, R-AND-D, AND PATENTS [J].
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ECONOMICS LETTERS, 1981, 7 (02) :183-187
[5]  
Griliches Z., 1987, EC POLICY TECHNOLOGI
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Levin R, 1984, SURVEY RES R D APPRO