@inproceedings{SisLab2146,
       booktitle = {Asian Symposium on Geographic Information System},
           title = {A Data Model for Region with Indeterminate Boundaries},
          author = {Thi Hong Nhan Vu and Jeong Hee Chi and Keun Ho Ryu},
            year = {2004},
             url = {https://eprints.uet.vnu.edu.vn/eprints/id/eprint/2146/}
}