Soliman T, Mourits MCM, van der Werf W, Hengeveld GM, Robinet C, Alfons GJM, Oude L (2012) Framework for Modelling Economic Impacts of Invasive Species, Applied to Pine Wood Nematode in EuropePLoS ONE 7(9): e45505. http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0045505