Search for: [References = "43. Mathisen I.E., Mikheeva A., Tutubalina O.V., Aune S., Hofgaard A., Rocchini D., 2013. Fifty years of tree line change in the Khibiny Mountains, Russia\: Advantages of combined remote sensing and dendroecological approaches. Applied Vegetation Science, vol. 17, no. 1, pp. 6\-16."]