Detail map of Philadelphia, Pennsylvania, United States,Tsentralnyy administrativnyy okrug, Moskva, Russia

A: Philadelphia, Pennsylvania, United States, B: Tsentralnyy administrativnyy okrug, Moskva, Russia

Discovery of Citation Mapping


In 1973 American information scientist Henry G. Small of the Institute for Scientific Information published "Co-Citation in the Scientific Literature; A New Measure of the Relationship between Two Documents," Journal of the American Society for Information Science 24 (1973) 265-9. Small's paper first described what he called "citation mapping," which enabled the use of citation data to create maps visualizing the structure of scientific activity.

Citation mapping was co-discovered by Irina Marshakova in Moscow.

Timeline Themes