@inproceedings{sgem2019s19130,
  title = {PRELIMINARY RESULTS OF THE STUDY ON THE SNOWFALL CHANGES AND VARIATION OF MAXIMUM SNOW COVER DEPTH FOR THE TERRITORY OF BULGARIA (1961-2015)},
  author = {Dimitar Nikolov},
  booktitle = {SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 19th International Multidisciplinary Scientific GeoConference SGEM2019, Energy and Clean Technologies},
  year = {2019},
  pages = {1025-1032},
  publisher = {STEF92 Technology},
  doi = {10.5593/sgem2019/4.1/s19.130}
}