?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Dao%2C+Ngoc+Thanh&rft.aulast=Dao&rft.aufirst=Ngoc+Thanh&rft.date=26+March+2016&rft.title=Building+the+Local+Spatial+Data+Infrastructure+for+the+Northeast+and+Northwest+of+Vietnam&rft.genre=proceeding