1. AA Agrawal, and PM Kotanen .2003 .Herbivores and the success of exotic plants: a phylogenetically controlled experiment .Ecol Lett,6:712 -15 .
2. HP Bais, TS Walker, and FR Stermitz .et al.2002 .Enantiomeric-dependent phytotoxic and antimicrobial activity of (+-)-catechin. A rhizosecreted racemic mixture from spotted knapweed .Plant Physiol,128:1173 -79 .
3. HP Bais, R. Vepachedu, and S. Gilroy .et al.2003 .Allelopathy and exotic plants: from genes to invasion .Science,301:1377 -80 .
4. J. Beckstead, and IM Parker .2003 .Invasiveness of Ammophila arenaria: release from soil-borne pathogens? Ecology,84:2824 -31 .
5. JD Bever .1994 .Feedback between plants and their soil communities in an old field community .Ecology,75:1965 -77 .