@article{Ní Dhubháin_Nieuwenhuis_Gardiner_1989, title={Feller productivity in first thinning systems.}, url={https://journal.societyofirishforesters.ie/index.php/forestry/article/view/9664}, journal={Irish Forestry}, author={Ní Dhubháin, Á and Nieuwenhuis, M.A. and Gardiner, J.J.}, year={1989}, month={Nov.}