@article {Sweeney:2001:1061-4303:134, author = "Sweeney, Michael W.", title = "Geographic Information Systems", journal = "Water Environment Research", volume = "72", number = "Supplement 1", year = "2001", abstract = "", pages = "134-140", url = "http://www.ingentaconnect.com/content/wef/wer/2001/00000072/A00106s1/art00004", doi = "doi:10.2175/106143000X138382" }