@article{shytermeja2013performance,
  title={Performance Impact of Ionospheric and Tropospheric Corrections of User Position Estimation Using GPS Raw Measurements}
  author={Shytermeja, Enik and Rakipi, Alban and Cakaj, Shkëlzen and Kamo, Bexhet and Koliçi, Vladi}
  journal={ICT Innovations 2013, Web Proceedings ISSN 1857-7288}
  pages={157--165}
  year={2013}
}