PLOS Article-Level Metrics API

PLOS Article-Level Metrics
Public Library of Science (PLOS) is a nonprofit advocacy organization and publisher aiming to transform scientific and medical research communication. Every article PLOS publishes is open access and contains metadata describing the article’s usage and reach. This metadata is called Article-Level Metrics. The PLOS Article-Level Metrics API provides a RESTful interface for retrieving usage statistics for page views, downloads, citations, Wikipedia article mentions, social network references, and coverage from select blogs.