A Citation Index is a tool used to track how often academic papers and articles are referenced by other researchers. It helps scholars see the impact of their work and find related studies. By analyzing citations, researchers can identify influential papers and trends in their field, making it easier to stay updated on important developments. One well-known example of a citation index is the Web of Science, which covers a wide range of disciplines. Another popular index is Google Scholar, which provides a more accessible way for anyone to find citations and related research. These tools are essential for academic research and collaboration.