4Matthew E. Baker, et al.. A GIS Model of Subsurface Water Potential for Aquatic Resource Inventory, Assessment, and Environmental Management [J]. ENVIRONMENTAL MANAGEMENT, 32 (6) : 706-719.
5Yasuhiro, et al.. A GIS - based Study to toward for Forecast of Suburban forest Change [J]. GeoJournal, 2001, 52: 203- 212.
6Lieve A. De Bock, et al.. Extraction of Environmental Information from Large Aerosol Data Sets Through Combined Application of Cluster and Factor Analysis [J]. MIKCOCHIM. ACTA, 1998, 128: 191-200.