@inproceedings{sgem2023s1931,
  title = {ASSESSMENT OF DROUGHT IN BULGARIA IN RECENT YEARS THROUGH THE STANDARDIZED PRECIPITATION INDEX},
  author = {Radoslav Evgeniev and Krastina Malcheva and Tania Marinova and Hristo Chervenkov and Lilia Bocheva},
  booktitle = {SGEM International Multidisciplinary Scientific GeoConference- EXPO Proceedings; 23rd International Multidisciplinary Scientific GeoConference Proceedings SGEM 2023, Energy and Clean Technologies, Vol 23, Issue 4.1},
  year = {2023},
  pages = {245-252},
  publisher = {STEF92 Technology},
  doi = {10.5593/sgem2023/4.1/s19.31}
}