IVANOVA, M. Affiliation to hotel chains as a development opportunity for Bulgarian hotels: Prof. Tanya Dabeva, PhD Institution awarding the Ph. D. Degree: University of Economics – Varna, Bulgaria Date of defence: 10th October 2013. European Journal of Tourism Research, [S. l.], v. 7, p. 144–147, 2014. Disponível em: https://ejtr.vumk.eu/index.php/about/article/view/146. Acesso em: 25 oct. 2021.