@inproceedings{sgem2018s28017,
  title = {CIRCULAR TOURISM AS A KEY FOR ECO-INNOVATIONS IN CIRCULAR ECONOMY BASED ON SUSTAINABLE DEVELOPMENT},
  author = {Kliment Naydenov},
  booktitle = {SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 18th International Multidisciplinary Scientific GeoConference SGEM2018, Ecology, Economics, Education and Legislation},
  year = {2018},
  pages = {135-142},
  publisher = {STEF92 Technology},
  doi = {10.5593/sgem2018/5.3/s28.017}
}