@inproceedings{sgem2022s20006,
  title = {ASSESSMENT OF NITROGEN POLLUTION OF THE ENVIRONMENT IN BULGARIA AND NUMERICAL SIMULATIONS FOR ITS MITIGATION},
  author = {Olga Nitcheva and Albena Vatralova},
  booktitle = {SGEM International Multidisciplinary Scientific GeoConference- EXPO Proceedings; 22nd SGEM International Multidisciplinary Scientific GeoConference Proceedings 2022},
  year = {2022},
  pages = {41-48},
  publisher = {STEF92 Technology},
  doi = {10.5593/sgem2022/5.1/s20.006}
}