1. ICP-Forests (2021) Tree Health Is Deteriorating in the European Forests. https://icp-forests.org/pdf/ICPForestsBriefNo5.pdf
2. Filipchuk, A.N., Malysheva, N.V., Zolina, T.A., Yugov, A.N. and Mironov, R.Y. (2021) Assessing the Possible Risks of Including the Reserved Forests in National Reporting under the UN Convention on Climate Change. Forestry Information, 2, 90-105.
3. Haapanen, R. and Ek, A. (2001) Software and Instructions for kNN Applications in Forest Resources. Description and Estimation. Staff Paper Series 152, University of Minnesota, Minneapolis. https://conservancy.umn.edu/handle/11299/37198
4. Tomppo, E., Czaplewski, R. and Mäkisara K. (2002) The Role of Remote Sensing in Global Forest Assessment. Working Paper No. 61, Forest Resources Assessment, Rome. http://www.fao.org/docrep/006/ad650e/AD650E00.htm#TopOfPage
5. Forest Inventory