Lott, John N. A; Liu, Jessica C; Pennell, Kelly A; Lesage, Aude; West, M Marcia (2002). "Iron-rich particles and globoids in embryos of seeds from phyla Coniferophyta, Cycadophyta, Gnetophyta, and Ginkgophyta: characteristics of early seed plants". Canadian Journal of Botany. 80 (9): 954–961. Bibcode:2002CaJB...80..954L. doi:10.1139/b02-083.
Christenhusz, MJM; Reveal, J; Farjon, A; Gardner, MF; Mill, RR; Chase, MW (2011). "A new classification and linear sequence of extant gymnosperms". Phytotaxa. 19: 55–70. doi:10.11646/phytotaxa.19.1.3.
Rothwell, Gar W.; Grauvogel-Stamm, Léa; Mapes, Gene (February 2000). "An herbaceous fossil conifer: Gymnospermous ruderals in the evolution of Mesozoic vegetation". Palaeogeography, Palaeoclimatology, Palaeoecology. 156 (1–2): 139–145. doi:10.1016/S0031-0182(99)00136-4.
Stull, Gregory W.; Qu, Xiao-Jian; Parins-Fukuchi, Caroline; Yang, Ying-Ying; Yang, Jun-Bo; Yang, Zhi-Yun; Hu, Yi; Ma, Hong; Soltis, Pamela S.; Soltis, Douglas E.; Li, De-Zhu; Smith, Stephen A.; Yi, Ting-Shuang (19 July 2021). "Gene duplications and phylogenomic conflict underlie major pulses of phenotypic evolution in gymnosperms". Nature Plants. 7 (8): 1015–1025. Bibcode:2021NatPl...7.1015S. doi:10.1038/s41477-021-00964-4. PMID34282286.
Ledig, F. Thomas; Porterfield, Richard L. (1982). "Tree Improvement in Western Conifers: Economic Aspects". Journal of Forestry. 80 (10): 653–657. doi:10.1093/jof/80.10.653. OSTI5675533.
Fraser, DA; Belanger, L; McGuire, D; Zdrazil, Z (1964). "Total growth of the aerial parts of a white spruce tree at Chalk River, Ontario, Canada". Can. J. Bot. 42 (2): 159–179. Bibcode:1964CaJB...42..159F. doi:10.1139/b64-017.
Durzan, DJ; Steward, FC (1967). "The nitrogen metabolism of Picea glauca (Moench) Voss and Pinus banksiana Lamb. as influenced by mineral nutrition". Can. J. Bot. 45 (5): 695–710. Bibcode:1967CaJB...45..695D. doi:10.1139/b67-077.
Mleziva, M.M.; Wang, J.H. (2012). "Paper". Polymer Science: A Comprehensive Reference. pp. 397–410. doi:10.1016/B978-0-444-53349-4.00274-0. ISBN978-0-08-087862-1. There are generally two types of trees used in papermaking: softwoods or coniferous woods (gymnosperms) and hardwoods (angiosperms).
Lott, John N. A; Liu, Jessica C; Pennell, Kelly A; Lesage, Aude; West, M Marcia (2002). "Iron-rich particles and globoids in embryos of seeds from phyla Coniferophyta, Cycadophyta, Gnetophyta, and Ginkgophyta: characteristics of early seed plants". Canadian Journal of Botany. 80 (9): 954–961. Bibcode:2002CaJB...80..954L. doi:10.1139/b02-083.
Stull, Gregory W.; Qu, Xiao-Jian; Parins-Fukuchi, Caroline; Yang, Ying-Ying; Yang, Jun-Bo; Yang, Zhi-Yun; Hu, Yi; Ma, Hong; Soltis, Pamela S.; Soltis, Douglas E.; Li, De-Zhu; Smith, Stephen A.; Yi, Ting-Shuang (19 July 2021). "Gene duplications and phylogenomic conflict underlie major pulses of phenotypic evolution in gymnosperms". Nature Plants. 7 (8): 1015–1025. Bibcode:2021NatPl...7.1015S. doi:10.1038/s41477-021-00964-4. PMID34282286.
Fraser, DA; Belanger, L; McGuire, D; Zdrazil, Z (1964). "Total growth of the aerial parts of a white spruce tree at Chalk River, Ontario, Canada". Can. J. Bot. 42 (2): 159–179. Bibcode:1964CaJB...42..159F. doi:10.1139/b64-017.
Durzan, DJ; Steward, FC (1967). "The nitrogen metabolism of Picea glauca (Moench) Voss and Pinus banksiana Lamb. as influenced by mineral nutrition". Can. J. Bot. 45 (5): 695–710. Bibcode:1967CaJB...45..695D. doi:10.1139/b67-077.
Moran, V. C.; Hoffmann, J. H.; Donnelly, D.; van Wilgen, B. W.; Zimmermann, H. G. (4–14 July 1999). Spencer, Neal R. (ed.). Biological Control of Alien, Invasive Pine Trees (Pinus species) in South Africa(PDF). The X International Symposium on Biological Control of Weeds. Montana State University, Bozeman, Montana, USA. pp. 941–953. Archived(PDF) from the original on 6 October 2016. Retrieved 28 June 2016.
lucidcentral.org
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"Pinus radiata". Weeds of Australia. keyserver.lucidcentral.org. 2016. Archived from the original on 19 June 2017. Retrieved 22 August 2018.
nih.gov
pubmed.ncbi.nlm.nih.gov
Stull, Gregory W.; Qu, Xiao-Jian; Parins-Fukuchi, Caroline; Yang, Ying-Ying; Yang, Jun-Bo; Yang, Zhi-Yun; Hu, Yi; Ma, Hong; Soltis, Pamela S.; Soltis, Douglas E.; Li, De-Zhu; Smith, Stephen A.; Yi, Ting-Shuang (19 July 2021). "Gene duplications and phylogenomic conflict underlie major pulses of phenotypic evolution in gymnosperms". Nature Plants. 7 (8): 1015–1025. Bibcode:2021NatPl...7.1015S. doi:10.1038/s41477-021-00964-4. PMID34282286.
Ledig, F. Thomas; Porterfield, Richard L. (1982). "Tree Improvement in Western Conifers: Economic Aspects". Journal of Forestry. 80 (10): 653–657. doi:10.1093/jof/80.10.653. OSTI5675533.
teara.govt.nz
Wassilieff, Maggy. "Conifers". Te Ara – the Encyclopedia of New Zealand updated 1-Mar-09. Archived from the original on 1 March 2010. Retrieved 17 December 2012.
Wassilieff, Maggy. "Conifers". Te Ara – the Encyclopedia of New Zealand updated 1-Mar-09. Archived from the original on 1 March 2010. Retrieved 17 December 2012.
Moran, V. C.; Hoffmann, J. H.; Donnelly, D.; van Wilgen, B. W.; Zimmermann, H. G. (4–14 July 1999). Spencer, Neal R. (ed.). Biological Control of Alien, Invasive Pine Trees (Pinus species) in South Africa(PDF). The X International Symposium on Biological Control of Weeds. Montana State University, Bozeman, Montana, USA. pp. 941–953. Archived(PDF) from the original on 6 October 2016. Retrieved 28 June 2016.
"Pinus radiata". Weeds of Australia. keyserver.lucidcentral.org. 2016. Archived from the original on 19 June 2017. Retrieved 22 August 2018.