What is a Citator?
- A citator is a research tool that allows one to look up a specific citation (to a case, a statute, etc.) to discover other resources that cite it. This is used, for example, to verify the validity of a case (is it still good law? --- or, has it been subsequently overturned, or reversed on appeal?) or to find additional cases or other materials on the same topic.
- While some citators are available in paper format, the online versions are more up-to-date and more efficient to use.
Using a Citator to check a CASE
--determine the validity of a case (has it been reversed on appeal? been overruled? been treated negatively by a subsequent court?)
--discover the history of a case (prior and subsequent)
--find parallel citations
--locate other cases that have cited your case (and are likely to deal with a similar issue)
--locate secondary sources that have cited your case & address your topic
Using a Citator to check a Statute
You can -
--discover the history of a statute (Has it been amended? Reversed? Is there pending legislation?)
--locate cases that have cited the statute
--learn how citing cases have interpreted the statute
--discover secondary sources that cite the statute & address your topic
List of Legal Citators
Shepard's Citations (via LexisNexis)
- Shepard's Citations via Lexis.com (law school password required)
See Shepard's Product Guide
- Shepard's Citations via Lexis Advance (law school password required)
Start your Shepard's request with shep:
- Shepard's Citations via LexisNexis Academic (available to all at UB)
Click on "US Legal" in the left frame; then click on "Shepard's Citations".
NOTE:only CASES can be shepardized on this platform
KeyCite (via Westlaw)
- KeyCite via Westlaw (law school password required)
- KeyCite via WestlawNext (law school password required)
Type kc or keycite followed by a citation, e.g., kc 93 sct 1817 or keycite 93 sct 1817, in the text box at the top of the page and click Search.
- Bloomberg Law ’s legal citation tool (under development?)