From: Ann Shumelda Okerson <[log in to unmask]> Date: Fri, 16 Sep 2016 00:15:40 -0400 From a recent Elsevier newsletter: "Based on our close review of the available evidence, there is no clear citation advantage for open access articles, or at least not one that can be identified as solely being related to an article’s access status. Whilst early studies suggested a causal relationship between article OA status and higher citation counts, subsequent studies identify weaknesses in the methodology used in earlier studies where a citation advantage had been found." https://www.elsevier.com/connect/citation-metrics-and-open-access-what-do-we-know