Leeuwen, J. F. N., Schäfer, H., Knaap, W. O., Rittenour, T., Björck, S. & Ammann, B. (2005). Native or introduced? Fossil pollen and spores may say. An example from the Azores Islands. In: Nentwig, W. et al. (eds.). Biological Invasions - From Ecology to Control. NEOBIOTA, 6: 27-34.
Leeuwen, J.F.N., Schäfer, H., Knaap, W.O., Rittenour, T., Björck, S. & Ammann, B. (2005). Native or introduced? Fossil pollen and spores may say. An example from the Azores Islands. In: Nentwig, W. et al. (Eds.): Biological Invasions - From Ecology to Control. NEOBIOTA 6: 27-34.
Leung, B., Lodge, D.M., Finnoff, D., Shogren, J.F., Lewis, M.A. & Lamberti, G. 2002 An ounce of prevention or a pound of cure: bioeconomic risk analysis of invasive species. Proc. R. Soc. B 269, 2407-2413,
Search for publications.