For all kinds of tricky citations, Google Scholar can be your saving grace. If you have just a partial citation (like an author, date, and subject) use the Advanced Search in Google Scholar to piece together the missing information.
Many universities are now publishing theses and dissertations in institutional repositories, which are freely available on the web and searchable via Google Scholar. You may be able to find recent dissertations on your research subject online!
Conferences and associations also sometimes publish their proceedings and publications freely online, so they may be accessible through Google Scholar.
Google Scholar is a go-to source for academic librarians, and you can use it too!