Tractor is unavailable to download information from Google Scholar, but we have found another free software that allows you to download research papers from Google Scholar, Microsoft Academic, Scopus, CrossRef... freely.
This software is called Publish or Perish and you can download it for your device using the following link: https://harzing.com/resources/publish-or-perish
Once you have installed the tool you will need to define your search criteria and the sources you would like to obtain the research articles from:
Once you have obtained the data save your results as a CSV and upload that CSV into Graphext. Once the dataset is uploaded you will need to click in New Recipe and follow the next steps to tune the project using our Recipe Builder:
Then, the project will be created and ready to be analysed.
Project Example: https://public.graphext.com/ce169ed2e39ce3b3/index.html