?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aufirst=Raghbir+Singh&rft.au=Sandhu%2C+Raghbir+Singh&rft.aulast=Sandhu&rft.tpages=164&rft.inst=University+of+London&rft.degree=Doctoral&rft.date=1998&rft.title=Intelligent+spatial+decision+support+systems