by Karr, J.R, Toth, L.A, Dudley, D.R
Published in Bioscience (01.02.1985)

by Dudley D.R
Published in Anales del Jardin Botanico de Madrid (1980)

by Larsen, D.P, Dudley, D.R, Hughes, R.M
Published in Journal of soil and water conservation (01.03.1988)

by Toth L.A, Dudley D.R, Karr J.R, Gorman O.T
Published in The American midland naturalist (01.01.1982)