税收优惠、研发投入与企业自主创新——基于沪深两市A股上市公司的实证分析

Publisher: 国家哲学社会科学学术期刊数据库

E-ISSN: 1672-8572|18|5|64-70

ISSN: 1672-8572

Source: 辽东学院学报:社会科学版, Vol.18, Iss.5, 2016-01, pp. : 64-70

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Abstract