When you are not quite satisfied with your search results in Summon, you may consider to search in subject databases. Here is the list of library databases by subjects, using the drag-down menu to select your subject and click on "GO".
If you are not sure which database to use, the Subject Guides is a good starting place.
Be sure to access Google Scholar via the Libraries web page to take advantage of our full text subscriptions (and to avoid being asked for payment!)
Use the "access Google Scholar" link above, or this path: Library web page --> "Search & Find" tab --> "Databases" tab --> under "Frequently Used Databases" heading, select Google Scholar