Tütünkov-Hrisztov, J. 2020. The Role of Intermediaries in the Tourism of the European Union: Supervisor: Professor Dr. Habil Antal Aubert CSc Institution awarding the Ph. D. Degree: University of Pécs - Faculty of Science Doctoral School of Earth Sciences Date of defence: 06 September 2019. European Journal of Tourism Research. 26, (Aug. 2020), 2612. DOI:https://doi.org/10.54055/ejtr.v26i.1943.