@inproceedings{sgem2020s19037,
  title = {AIR QUALITY MANAGEMENT IN THE BORDER REGION OF THE REPUBLIC OF BULGARIA AND THE REPUBLIC OF SERBIA},
  author = {Daniela Zlatunova},
  booktitle = {SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 20th International Multidisciplinary Scientific GeoConference Proceedings SGEM 2020, Energy and Clean Technologies},
  year = {2020},
  pages = {297-304},
  publisher = {STEF92 Technology},
  doi = {10.5593/sgem2020/4.1/s19.037}
}