Development of Key Performance Index(KPI) for R&D expenditure activities focusing on efficiency of patent (R&D지출의 효율성 측면에서 특허를 이용한 KPI 개발: 특허효율성지표(PEI: Patent Efficiency Index))
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- Journal of Technology Innovation
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- v.20 no.3
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- pp.29-55
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- 2012