Bachelor's, Master's and Ph.D. thesis We assist Bachelor's or Master's thesis on a great variety of topics within our Research Disciplines. We focus on applied research in the field of Audit and Accounting. Are you interested in writing a Bachelor's, Master's or a Ph.D. thesis? Please contact Professor Dr. Peter Leibfried directly via E-Mail. In the Download area we have a list of topics which students came up with and have been accepted for a Bachelor's, Master's or Doctoral thesis. The thesis topics in the list are all already taken by students. Please refer to Overview of accepted thesis topics from students, but come up with your own proposal of a topic.