Shepard's Citations

Shepard's Citations is a citator used in United States legal research that provides a list of all the authorities citing a particular case, statute, or other legal authority. The verb Shepardizing (sometimes written lower-case) refers to the process of consulting Shepard's to see if a case has been overturned, reaffirmed, questioned, or cited by later cases. Prior to the development of electronic citators like Westlaw's KeyCite during the 1990s, Shepard's was the only legal citation service that attempted to provide comprehensive coverage of U.S. law.