2. Elton, C. E. 1958. The Ecology of Invasions by Animals and Plants. Chapman and Hall, New York.
3. Lodge, D. M. 1993. Biological invasions: lessons for ecology. Trends in Ecology and Evolution 8:133-137.
4. Lonsdale, W. M. 1999. Global patterns of plant invasions and the concept of invasibility. Ecology 80:1522-1536.
5. Mack, R. N., D. Simberloff, W. M. Lonsdale, H. Evans, M. Clout, and F. A. Bazzaz. 2000. Biotic invasions: Causes, epidemiology, global consequences, and control. Ecological Applications 10:689-710. (see #1 for a "simplified" version with a pdf file)
6. Williamson, M. 1996. Biological Invasions. Chapman and Hall, London.