1. WTTC World Travel and Tourism Council: Economic impact of travel & tourism (2015). http://www.wttc.org/media/files/reports/economic%20impact%20research/economic%20impact%202015%20summary_web.pdf
2. UNWTO World tourism organization, tourism highlights (2015). http://www.e-uwto.org/doi/pdfhttps://doi.org/10.18111/9789284416899
3. Jucan M.S.: The tourist destination of the future: scenarios and trends, Ph.D. Thesis, “Lucian Blaga” University of Sibiu, Romania Faculty of Economics, Sibiu, Romania (2015)
4. Madgerova, R.H., Kyurova, V.: et al.: Application of the lean concept as a prerequisite for a tourist business development. Econ. Process. Manage. Int. Sci. J. 4 (2016)
5. Iunius, R.F., Cismaru, L., Foris, D.: Raising competitiveness for tourist destinations through information technologies within the newest tourism action framework proposed by the European Commission. Sustainability 7 (2015). https://doi.org/10.3390/su7091289