Measuring the Returns to R&D: The Depreciation Problem
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https://www.nber.org/papers/w13473
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资源简介：
Measuring the private returns to R&D requires knowledge of its private depreciation or obsolescence rate, which is inherently variable and responds to competitive pressure. Nevertheless, most of the previous literature has used a constant depreciation rate to construct R&D capital stocks and measure
提供机构：
美国国家经济研究局
创建时间：
2007-10-01
