Indexing, abstracting and citation databases
One of the features of ROAD is to provide information about the coverage of the resources by indexing, abtracting and citation databases.
The following definitions are taken from Wikipedia.
A citation index is a kind of bibliographic database, an index of citations between publications, allowing the user to easily establish which later documents cite which earlier documents. In 1960, Eugene Garfield's Institute for Scientific Information (ISI) introduced the first citation index for papers published in academic journals, first the Science Citation Index (SCI), and later the Social Sciences Citation Index (SSCI) and the Arts and Humanities Citation Index (AHCI).