?url_ver=Z39.88-2004&rft_id=10.1109%2FIconSpace.2015.7283789&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.aulast=Qayyum&rft.au=Qayyum%2C+A.&rft.aufirst=A.&rft.isbn=9781479919406&rft.issn=21654301&rft.date=2015&rft.title=Comparison+of+digital+elevation+models+based+on+high+resolution+satellite+stereo+imagery&rft.genre=proceeding