R&D in SMEs: a paradox?
综述了中小企业研发投资悖论的相关文献，总结了本期特刊文章，并得出政策启示。
This paper has three objectives: (1) to survey the relevant literature addressing the (apparent) paradox of Research & Development investments carried out within Small and Medium Enterprises; (2) to provide focused summaries of the articles in this special issue; (3) to draw some general conclusions in terms of policy implications.