@article{Ala-Ilomäki_1990, title={The state-of-the-art: Harvesting in the Nordic countries. }, url={https://journal.societyofirishforesters.ie/index.php/forestry/article/view/9676}, journal={Irish Forestry}, author={Ala-Ilomäki, Jari}, year={1990}, month={Nov.}