Abstract：Based on the data from 249 questionnaires on manufacturing enterprises in Yangtze River Delta region, this paper used firm scale, ownership and technology intensity as control variables, and carried out an empirical study on differences of manufacturing enterprises with the methods of independent-sample t-test and analysis of variance.We concluded:Different firm characteristics had different influences on manufacturing enterprises' preference in selecting external innovation source.The main external innovation sources selected by manufacturing enterprises with different firm characteristics were different.
杨洪涛;李聪聪. 长三角地区制造业企业利用外部创新源的差异性[J]. , 2014(3): 106-110.
Yang Hongtao;Li Congcong. Differences in Manufacturing Enterprises' Utilization of External Innovation Sources in Yangtze River Delta Region. , 2014(3): 106-110.
2014, 
