1. Forest Owners Association (2023, March 25). Facts and Figures 2020/21. New Zealand Plantation Forest Industry. Available online: https://nzfoa.org.nz/images/FGT_3704_Facts_and_Figures_202021_Web_FA1.pdf.
2. Clonal propagation: Gymnosperms;Cell Cult. Somat. Cell Genet. Plants,1984
3. Smith, D.R., Walter, C., Warr, A., Hargreaves, C.L., and Grace, L.J. (1994, January 2–6). Somatic Embryogenesis joins the plantation forestry revolution in New Zealand. Proceedings of the TAPPI Biological Sciences Symposium, Minneapolis, MN, USA.
4. Scots pine (Pinus sylvestris L.);Paques;Forest Tree Breeding in Europe: Current State-of-the-Art and Perspectives,2013
5. Park, Y.-S., Bonga, J.M., and Moon, H.-K. (2016). Vegetative Propagation of Forest Trees, National Institute of Forest Science.