An article published in THE – Times Higher Education on January 13, 2020 how a Commission appointed by the Russian Academy of Sciences (RAS) to investigate potential cases of plagiarism has led to an unprecedented number of retractions. Unsurprisingly, the news piece makes reference to pay-to-publish systems, which are known to financially exploit current researchers’ pressure to publish.
More here: https://www.timeshighereducation.com/news/retractions-mark-significant-moment-russian-science