6William Bajjali.Using Arcview GIS to determine the origin of groundwater salinity in the Dhuleil, Halbat and Samra Areas of Jordan [DB/OL].http://www.esri.com/library/userconf/
7S.J.Boyle and I.K.Tsanis.IDOR2D GIS A closely coupled hydrodynamic/pollutant transport GIS model [DB/OL].http://www.esri.com/library/userconf/
8Soo Lee, Kyoo-seock Lee.Water quality management system an mok-hyun stream watershed using GIS [DB/OL].http://www.esri.com/library/userconf/
9Ferdi Hellweger,Eugenia Naranjo,Pete Shanahan etc. Screening-level GIS tools for modeling environmental contamination from mining activities [DB/OL].http://www.esri.com/library/user-conf/