It is over 50 years since Dr Eugene Garfield envisioned citation indexing tools that would allow researchers to expedite their research process, evaluate the impact of their work, spot scientific trends, and trace the history of modern scientific thoughts. Dr Garfield went on to build a company – ISI (now part of Thomson Reuters) around these ideas.

Here we bring together essays and articles written by Dr. Garfield and other Thomson Reuters staff members, to provide in-depth explanatory information for users of our citation databases and other information tools.


Citation Analysis

Citation Indexing

Journal Citation Reports

Journal and Web Site Selection Process

Use of the Thomson Reuters Citation Database

Archived essays

White Papers

Using Bibliometrics: A Guide to Evaluating Research Performance with Citation Data

"A library faced with collection decisions, a foundation making funding choices, or a government office weighing national research needs must rely on expert analysis of scientific research performance."

Request free download

Using Bibliometrics in Evaluating Research

"If you can measure that of which you speak, and can express it by a number, you know something of your subject; but if you cannot measure it, your knowledge is meager and unsatisfactory."
— William Thomson, Lord Kelvin

Request free download


A Report for Executives

Finding Meaningful Performance Measures for Higher Education

Download now