Including Non-source Items

We recently created two maps using Scopus data from 1996-2011. One map included only source items (papers indexed by Scopus), while the other included cited non-source items along with the source items. Thus, cited un-indexed items such as articles from regional journals, conference papers and books, were included in the map. The two maps are shown below. The source-only map contains 19 million items, while the non-source map contains a total of 43 million items, 22 million of which are non-source items. Details are contained in our recent paper (add hyperlink later). Higher resolution versions of these two maps are available by clicking on the small maps below.

Source items only


Source + non-source items