英文文献：The Determinants of Research Productivity in Agricultural Biotechnology-农业生物技术研究生产力的决定因素
英文文献作者：Chen, Qiang,Naseem, Anwar,Pray, Carl E.
英文文献摘要：
The ag-biotech industry underwent considerable consolidation in the last decade in part to take advantage of economics of scale and scope. The paper investigates the impact of such consolidation on inventive activity at the firm level. Careful attention is paid to the role of firm size, technology diversification and spillovers in the innovation process.

农业生物技术产业在过去十年经历了相当大的整合，部分是为了利用规模经济和范围经济的优势。本文从企业层面考察了这种整合对创新活动的影响。研究了企业规模、技术多样化和溢出效应在创新过程中的作用。