Find people or articles that have cited specific previously published articles. Check bibliographical details. These indexes index core publications but are not comprehensive and do not include all conferences, series, or books. There is a time lag between the publication of an item and its appearance in these indees. The BMA Library does not subscribe to this index.
Impact factors measure the citation impact of a journal article with the research community.
That is, they measure how many times articles in a journal have been cited in relation to the total number of articles in the journal. They indicate the worthiness of a journal and as such are used by authors to ensure that they submit papers to a well-regarded journal, and by journals for marketing purposes. Library staff can undertake some research into impact factors for members.