@article{Pergl2017, author = {Pergl, Jan and Pysek, Petr and Bacher, Sven and Essl, Franz and Genovesi, Piero and Harrower, Colin A. and Hulme, Philip E.}, year = {2017}, language = {eng}, copyright = {http://creativecommons.org/licenses/by/4.0/}, title = {Troubling travellers}, url = "http://dx.doi.org/10.17169/refubium-24417", }