Alma Swan: Review of Studies on Open Access Impact Advantage. The Green Open Access Citation Advantage: Within-Journal Versus Between-Journal Comparisons. Miguel, Sandra, Zaida Chinchilla-Rodriguez & Félix de Moya-Anegón (2011) Open Access and Scopus: A New Approach to Scientific Visibility From the Standpoint of Access.
Journal of the American Society for Information Science and Technology (JASIST) ABSTRACT: The last few years have seen the emergence of several open access (OA) options in scholarly communication, which can be grouped broadly into two areas referred to as gold and green roads. Several recent studies have shown how large the extent of OA is, but there have been few studies showing the impact of OA in the visibility of journals covering all scientific fields and geographical regions.This research presents a series of informative analyses providing a broad overview of the degree of proliferation of OA journals in a data sample of about 17,000 active journals indexed in Scopus.
It is also very useful in reviewing and supporting the advantages and primacy of Green OA.