One way to measure the impact of an article and its authors is to look at the number of times it has been cited. The Library subscribes to two multidisciplinary databases that track citations:

• Scopus, which indexes more than 17,000 journal titles (including all of MEDLINE). However, it only tracks citation information for articles back to 1996.
• Web of Science, which indexes more than 10,000 journal titles and tracks citations back to 1965.

Because the databases each cover different content, it is a good idea to check both and compare the results to find a more complete citation count.
Google Scholar also provides citation counts, but because it relies on a computer algorithm to find citations, its citation counts may contain duplicate or false citations. To get an accurate number from Google Scholar, you must verify every result by hand. This can be very time consuming, but Google Scholar may sometimes find citations that were not discovered by either Scopus or Web of Science.
For more information, please see the Who is Citing Your Articles? YouTube video tutorials or contact the Library.