Article-level metrics

[2] Alternative article-level metrics include the CD index, a measure of the disruptiveness of an article.

[5] Article-level metrics, on the other hand, may demonstrate the impact of an individual article.

[6] Starting in March 2009, the Public Library of Science introduced article-level metrics for all articles.

[7] The open access publisher PLOS provides article level metrics for all of its journals[8] including downloads, citations, and altmetrics.

[9] In March 2014 it was announced that COUNTER statistics, which measure usage of online scholarly resources, are now available at the article level.