Polasky Stephen
Departments of Applied Economics and Ecology, Evolution and Behavior, University of Minnesota, 1994 Buford Avenue, St. Paul, MN 55112, USA.
Proc Natl Acad Sci U S A. 2008 May 6;105(18):6505-6. doi: 10.1073/pnas.0802815105. Epub 2008 Apr 30.