德国汉堡生物医药集群研发和商务知识的网络结构与空间流动
许吉黎, 杨帆, 薛德升
Differentiated Knowledge Bases, Knowledge Networks, and Spatial Flows: Evidence from the Biomedical Cluster in Hamburg, Germany
Jili Xu, Fan Yang, Desheng Xue
地理科学
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2019, (2): 325
-333
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DOI: 10.13249/j.cnki.sgs.2019.02.017