7Liu Xiaoming, Bollen Johan etc. Co - authorship networks in the digital libraryresearch community [ J ]. Information Processing and Management, 2005, 41 : 1462 - 1480.
8Yoshikane Fuyuki, Yukinozawa Taka etc. Comparative analysis of co - authorship networksconsidering authors'roles in collaboration:Differences between the theoretical and application areas[J]. Scientometrics, 2006,68(3) :643 -655.
9Barabasi A. L. , Jeonga H. etc. Evolution of the social network ofscienti $ c collaborations [ J ]. Physica A, 2002, 311 : 590 - 614.
10Newman. M. E.J.. Scientific collaboration networks. Ⅰ. Network construction and fundamental results [ J ]. PHYSICAL REVIEW E, VOLUME 64, 016131.