@inproceedings{sgem2019s02039,
  title = {HYDROCHEMICAL CHARACTERIZATION OF GROUNDWATER IN MESOZOIC AQUIFERS IN CENTRAL NORTHERN BULGARIA},
  author = {Mila Trayanova},
  booktitle = {SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 19th SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings19th, Science and Technologies in Geology, Exploration And Mining},
  year = {2019},
  pages = {305-312},
  publisher = {STEF92 Technology},
  doi = {10.5593/sgem2019/1.2/s02.039}
}