Climatic determinants of introduced Sitka spruce in Hiiumaa Island, Estonia.

Läänelaid, A., Helama, S., (2019). Baltic Forestry 25(1), 161-167. Lithuanian Forest Research Institute (Lietuvos Misku Institutas), Kaunas, Lithuania. English language

Sibirportulakk, kjempespringfrø og noen andre fremmede landskaps- og hageplanter i kystkommunen Selje, Sogn og Fjordane. / Claytonia sibirica, Impatiens glandulifera and some other alien garden plants in Selje municipality, Sogn og Fjordane county.

Austad, I., Hauge, L., (2019). Blyttia 77(1), 49-60. Norsk Botanisk Forening, Oslo, Norway. Norwegian language

Extent, distribution and origin of non-native forest tree species in Europe.

Brus, R., Pötzelsberger, E., Lapin, K., Brundu, G., Orazio, C., Straigyte, L., Hasenauer, H., (2019). Scandinavian Journal of Forest Research 34(7), 533-544. Taylor & Francis, Abingdon, UK. English language

Current, emerging and potential pest threats to Sitka spruce plantations and the role of pest risk analysis in preventing new pest introductions to Ireland.

Tuffen, M. G., Grogan, H. M., (2019). Forestry (Oxford) 92(1), 26-41. Oxford University Press, Oxford, UK. English language

How important are different non-native conifers in Britain to Common Crossbills Loxia curvirostra curvirostra?

McNab, E., Summers, R., Harrison, G., Park, K. J., (2019). Bird Study 66(1), 64-72. Taylor & Francis, Abingdon, UK. English language

Spread of the introduced Sitka spruce (Picea sitchensis) in coastal Norway.

Nygaard, P. H., Øyen, B. H., (2017). Forests 8(1), 24. MDPI AG, Basel, Switzerland. English language

Growth response of an invasive alien species to climate variations on subantarctic Campbell Island.

Palmer, J. G., Turney, C. S. M., Fogwill, C., Fenwick, P., Thomas, Z., Lipson, M., Jones, R. T., Beaven, B., Richardson, S. J., Wilmshurst, J. M., (2018). New Zealand Journal of Ecology 42(1), 31-39. New Zealand Ecological Society, Christchurch, New Zealand. English language

Sitkagran Picea sitchensis i stor spredning i det norske kystlandskapet. Eksempel fra Stadlandet, Selje kommune. / Sitka spruce Picea sitchensis as an invasive species in the Norwegian coastal landscape. Example from Stadlandet, Selje municipality.

Thorvaldsen, P., (2016). Blyttia 74(3), 160-171. Norsk Botanisk Forening, Oslo, Norway. Norwegian language

Discriminating between native Norway spruce and invasive Sitka spruce - a comparison of multitemporal Landsat 8 imagery, aerial images and airborne laser scanner data.

Hauglin, M., Ørka, H. O., (2016). Remote Sensing 8(5), 363. MDPI AG, Basel, Switzerland. English language

The importance of woody plant introduction for forest trees improvement.

Isajev, V., Stankovic, M., Orlovic, S., Bojic, S., Stojnic, S., (2017). AGROFOR International Journal 2(2), 56-64. Faculty of Agriculture, University of East Sarajevo, Istočno Sarajevo, Bosnia-Herzegovina. English language