Alien species

Werenkraut, V., Baudino, F. & Roy, H.E. (2020) Citizen science reveals the distribution of the invasive harlequin ladybird (Harmonia axyridis Pallas) in Argentina. Biological Invasions, 22, 2915–2921.
Hipkin, C.R. & Facey, P.D. (2009) Biological Flora of the British Isles: Coincya monensis (L.) Greuter & Burdet ssp. monensis (Rhyncosinapis monensis (L.) Dandy ex A.R. Clapham) and ssp. cheiranthos (Vill.) Aedo, Leadley & Muñoz Garm. (Rhyncosinapis cheiranthos (Vill.) Dandy). Journal of Ecology, 97, 1101–1116.
Brown, P.M.J., Roy, H.E., Rothery, P., Roy, D.B., Ware, R.L., Majerus, M.E.N., Roy, H.E. & Wajnberg, E. (2008) Harmonia axyridis in Great Britain: analysis of the spread and distribution of a non-native coccinellid. From Biological Control to Invasion: the Ladybird Harmonia axyridis as a Model Species pp. 55–67. Springer Netherlands.
Winter, M., Schweiger, O., Klotz, S., Nentwig, W., Andriopoulos, P., Arianoutsou, M., Basnou, C., Delipetrou, P., Didžiulis, V., Hejda, M., Hulme, P.E., Lambdon, P.W., Pergl, J., Pyšek, P., Roy, D.B. & Kühn, I. (2009) Plant extinctions and introductions lead to phylogenetic and taxonomic homogenization of the European flora. Proceedings of the National Academy of Sciences, 106, 21721–21725.