1. Greffe, X.: Is rural tourism a lever for economic and social development? J. Sustain. Tourism 2, 23–40 (1994)
2. Olsen, M.: Tourism themed routes: a Queensland perspective. J. Vacation Mark. 9, 331–341 (2003)
3. Meyer, D.: Tourism routes and gateways: key issues for the development of tourism routes and gateways and their potential for pro-poor tourism. Overseas Development Institute, London (2004)
4. Csapo, J., Berki, M.: Existing and future tourism potential and geographical basis of thematic routes in South Transdanubia, Hungary. In: International Conference of Territorial Intelligence, Besançon 2008, Besançon, France, October 2008, p. 10 (2009)
5. Lecture Notes in Computer Science;S Battino,2018