Ioannidis, Kostas, and Polyxeni Koropouli. “Quantitative Genetic Parameters of Heartwood and Its Chemical Traits in a Black Pine (Pinus Nigra J.F.Arnold) Clonal Seed Orchard Established in Greece”.
New Zealand Journal of Forestry Science 53 (June 11, 2023). Accessed June 24, 2025.
https://www.nzjforestryscience.nz/index.php/nzjfs/article/view/249.