@inproceedings{SisLab2139,
       booktitle = {Korea Spatial Information System Society},
           title = {Estimating Object Location in Location-based Services},
          author = {Thi Hong Nhan Vu and Keun Ho Ryu},
            year = {2006},
             url = {https://eprints.uet.vnu.edu.vn/eprints/id/eprint/2139/}
}