1. Ackzell, L. (1993). A comparison of planting, sowing and natural regeneration for Pinus sylvestris (L.) in boreal Sweden. Forest Ecology and Management, 61 (3-4), 229-245. https://doi.org/10.1016/0378-1127(93)90204-Z
2. Ackzell, L. (1994). Natural regeneration on planted сlear-сuts in Boreal Sweden. Scandinavian Journal of Forest Research, 9 (1), 245-250. https://doi.org/10.1080/02827589409382837
3. Babenko, V., & Kyrychok, L. (1999). Natural regeneration of Scots pine in fresh pine sites. Scientific Bulletin of National Agricultural University, 17, 325-327 [in Ukrainian].
4. Buzun, V., & Prystupa, G. (1990). The use of natural regeneration in the pine forests of the first group. Forestry, 6, 14-16 [in Ukrainian].
5. Buzun, V., & Turko, V. (1996). Formation of pine plantations from preserved undergrowth. Forestry, 5, 23-25 [in Ukrainian].