@article{oai:chuo-u.repo.nii.ac.jp:00012092,
 author = {小山, 憲司},
 journal = {中央大学社会科学研究所年報},
 month = {Sep},
 note = {application/pdf, This study aims to verify the validity of the article titled “65 out of the 100 most cited papers are paywalled.” The article is published on the website in November 2017 and it got into the news in Japan. However, we don’t know the difference between the characteristics of paywall papers and open access ones because it doesn’t explain the details about those papers. This study examines 101 articles listed in this article and clarifies the features of them. As a result, 66 of the 101 papers were paid and 35 were open access, whereas there were 67 paid papers and 34 open access ones in the survey conducted by the author in February 2018. Both of them are almost the same as the numbers, but the breakdown varies. This study confirmed that the following four points are necessary to discuss the article: （1） insurance of verifiability, （2） provision of sufficient data, （3） lack of a point of view in cumulation, and （4） survey of green open access.},
 pages = {85--96},
 title = {「研究論文と有料の壁」の語られ方とその実際},
 volume = {23},
 year = {2019},
 yomi = {コヤマ, ケンジ}
}