Libraries at University of Nebraska-Lincoln


Date of this Version

Summer 6-7-2019

Document Type



Ajiferuke, I. (1988). Collaborative Co- efficient : A single measure of the degree of collaboration in research, Scientometrics, 14(5-6), 421-433.

Astrophysics. (n.d.). Retrieved from

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The study presents the trends in authorship pattern and authors collaborative research in Astrophysics with a sample of 411 articles during the period 2008-2017. The study found single author has contributed 133 with (32.3 %), Multi authored articles are dominant i.e. 278 (67.6 %). The mean value for the overall degree of collaboration for the 2008-2017 is found to be 0.67, the collaboration index increased from 5.18 in 2008 to 8.22 in 2017 with an average of 4.00. The collaborative co-efficient for the year 2008 is 0.51 which increased gradually to 0.54 in 2017 with an average of 0.49. The most prolific author is Del Zanna, Giulio who published 15 publications followed by Spitaleri, C. published 10 publications. Without Collaboration stood first place in levels of collaboration with 133 (32.3%).