2017 Volume 27 Issue 4 Pages 329-336
The authors extracted Digital Object Identifier (DOI) links on Japanese, English, and Chinese Wikipedias as of March 2015, 2016, and 2017 for a time series analysis. As a result, it is revealed that (1) the number of DOI links on each language Wikipedia is increasing year by year, (2) the number of DOI links uniquely referenced on each language Wikipedia is increasing year by year, (3) scholarly information of Japan tends to be referenced more on Japanese Wikipedia than other languages, and (4) there are unique references to scholarly information of Japan on each language Wikipedia and it is increasing year by year.