Cocitation
Co-citation is a concept in bibliometrics describing the frequency with which two documents are cited together by later works. When a subsequent paper cites both documents A and B, A and B are said to be co-cited; the strength of their co-citation is the number of times they appear together in citations. Co-citation analysis uses these frequencies to identify related literature and to map the structure and evolution of scientific fields.
Co-citation differs from bibliographic coupling. Co-citation is based on how earlier works are cited together by
The method originated with Henry Small in 1973, who introduced co-citation analysis to study the structure
Applications include mapping scientific domains, tracking topic development over time, identifying foundational papers, informing literature reviews,