Chen, Xiaotian, and Tom Olijhoek. "Measuring the degrees of openness of scholarly journals with the open access spectrum (OAS) evaluation tool." Serials Review, 42.2, (2016).

This article discusses how a total of 1,005 journals, both in Open Access (OA) and not in OA journals in various languages and from various parts of the world, were evaluated and scored by a team of information professionals in 2015 based on the policies posted on journals' websites.