What is a citation?
Citations consist of title, author, publication data, and, when available: • abstracts • citings (where the paper has been referenced by other papers) • references (by the paper to other papers) • index terms from ACM’s Computing Classification System (CCS) • reviews from ACM’s Computing Reviews • ACM member DL subscribers also get access to the Online Computing Reviews Service • DOIs: Digital Object Identifiers, URLs that provide permanent links to papers on the publisher’s Web site