API, EULA, and scraping for Google Scholar
Not too sure if you are looking for this.

See One policy, one Google experience released by Google 


  On March 1, 2012, we changed our Privacy Policy and Terms of Service.
  We got rid of over 60 different privacy policies across Google and
  replaced them with one that’s a lot shorter and easier to read. The
  new policy and terms cover multiple products and features, reflecting
  our desire to create one beautifully simple and intuitive experience
  across Google.


That means all of the Google services have the same ToS, which is available here : Google Terms of Service

Here's a quote from that page


  Don’t misuse our Services. For example, don’t interfere with our
  Services or try to access them using a method other than the interface
  and the instructions that we provide.