Tütünkov-Hrisztov, Jordán. 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 (August):2612. https://doi.org/10.54055/ejtr.v26i.1943.