Author Affiliations +
Ruth G. Shaw,1,2,* Frank H. Shaw,1 Charles Geyer3
1aDepartment of Ecology, Evolution and Behavior, University of Minnesota, St. Paul MN 55108
2brshaw@superb.ecology.umn.edu
3cDepartment of Statistics, University of Minnesota, Minneapolis, MN 55455
*Address through June 2003: Institut des Sciences de l'Evolution, Université Montpellier II, Place Eugène Bataillon cc 065, 34095 Montpellier cedex 5, France