Millions of research papers at risk of disappearing from the Internet

A study identified more than two million articles that did not appear in a major digital archive, despite having an active DOI.Credit: Anna Berkut/Alamy More than one-quarter of scholarly articles are not being properly archived and preserved, a study of more than seven million digital publications suggests. The findings, published in the Journal of Librarianship and Scholarly Communication on 24

[rajendra]

doiを付していても論文を追跡できない、ただし論文が消えたわけではなくアーカイブに辿り着けないだけ、程度の意味合いじゃないかしら。道筋をメンテナンスし続けるのはコストかかるよね。