Biblio
“Natural and land-use history of the Northwest mountain ecoregions (USA) in relation to patterns of plant invasions”, Perspectives in Plant Ecology, Evolution and Systematics, vol. 7, pp. 137–158, 2005.
, “Cattle, deer, and elk grazing of the invasive plant sulfur cinquefoil”, Natural Areas Journal, vol. 28, pp. 404–409, 2008.
,