Leydesdorff, L., Moya-Anegon, F., Guerrero-Bote, V.P. (2015) Journal maps, interactive overlays, and the measurement of interdisciplinarity on the basis of Scopus data (1996-2012). Journal of the Association for Information Sc and Tech 66(5): 1001-1016

Abstract. Using Scopus data, we construct a global map of science based on aggregated journal–journal citations from 1996–2012 (N of journals = 20,554). This base map enables users to overlay downloads from Scopus interactively. Using a single year (e.g., 2012), results can be compared with mappings based on the Journal Citation Reports at the Web of Science (N = 10,936). The Scopus maps are more detailed at both the local and global levels because of their greater coverage, including, for example, the arts and humanities.