1. Adams DA, Buford MA, Dumond DM (1987) In search of the wetlandboundary. Wetlands 7:59–70
2. Brinson MM (1993) A hydrogeomorphic classification for wetlands. Technical Report WRP-DE-4. U.S. Army Engineer Waterways Experiment Station, Vicksburg
3. Brinson MM (1995) Assessing wetland functions using HGM. National Wetlands Newsletter, January/February, Washington DC: Environmental Law Institute 1995:7–13
4. Brinson MM (1996) The hydrogeomorphic approach explained. National Wetlands Newsletter, November/December. Washington DC: Environmental Law Institute 1996:10–16
5. Claassen R, Heimlich RE, House RM, Wiebe KD (1998) Estimating the effects of relaxing agricultural land use restrictions: wetland delineation in the swampbuster program. Rev Agric Econ 20:390–405