A dissertation or thesis is a special genre of scholarly writing.  A dissertation or thesis that is related to your research topic contains a review of the relevant literature and an extensive bibliography.  It is often where new ideas first appear in the academic literature.

Consult databases for theses and dissertations, in particular:

Carleton University theses and dissertations are now deposited to the university's institutional repository, and they will appear there before they are loaded into any other database:

Suggested Carleton University Theses and Dissertations