【作者(必填)】R Faff, YK Ho, W Lin, CM Yap

【文题(必填)】Diminishing marginal returns from R&D investment: evidence from manufacturing firms
【年份(必填)】2012

【全文链接或数据库名称(选填)】http://ideas.repec.org/a/taf/applec/45y2013i5p611-622.html；http://www.google.com.hk/search?q=Diminishing+marginal+returns+from+R%26D+investment%3A+evidence+from+manufacturing+firms&hl=zh-CN&
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