Resum

Knowledge maps are tools that help visualize information. If they take bibliographical data as the basis for network analysis they become a simple means of getting to the crux of highly specific areas or subjects. This paper focuses on the use of scientific bibliographic information to produce a knowledge map and describes the tools that can do this. Bibexcel is used to analyze the data extracted from Web of Science and Pajek is used to visually represent the results. The paper describes the various steps in the procedure, focusing on what to do when visualization is hampered by too many data.