This section collects links to web sites reporting rankings of academic journals, world universities and departments, or scholars in selected fields. The section includes 3 types of rankings. The Academic journals section collects a series of rankings of academic journals based on bibliometric indexes such as the ISI Impact Factor and the H Index. The Research Institutions section collects links to web sites reporting rankings of world universities and departments. The section devoted to Scholars collects rankings of single scholars from different fields based on bibliometric criteria such as the H Index.