You are probably familiar with using Scopus, Web of Science, and Google Scholar to find citations between scholarly works. This week, we look at alternative citation indices that are also powerful, and free to use!

Lens offers a lot of useful features that Google Scholar does not have, such as tracing patent citations, filtering results, mass export, results analysis and visualization.

When you look for literature for your research topics, where do you often start? Google Scholars appears to be a popular choice; yet,