@inproceedings{sgem2008paper,
  title = {NEW NAVITEQ GNSS SUB - NETWORK OF PERMANENT STATIONS},
  author = {I. Ivanova and J. Jeliaskov},
  booktitle = {8th International Scientific Conference - SGEM2008},
  year = {2008},
  pages = {455-458},
  publisher = {SGEM Scientific GeoConference},
  doi = {}
}