1. Adams, W.T., White, T.L., Hodge, G.R. and Powell, G.L. (1994). Genetic parameters for bole volume in longleaf pine: large sample estimates and influences of test characteristics. Silvae Genet., 43(5/6): 357-366
2. Allard, R.W. (1960). Principles of Plant Breeding. John Wiley, New York.
3. Chaturvedi, A.N. and Khanna, L.S. (1982). Forest Mensuration. IBD, Dehra Dun.
4. Critchfield, W.D. and Little, E.L. (1966). Geographical Distribution of the Pines of the World. USDA Forest Service Miscellaneous Publication No. 991, Washington DC. https://doi.org/10.5962/bhl.title.66393
5. Dogra, D.K. (1985). Selection of superior phenotypes in Pinus roxburghii Sarg. from Himachal Pradesh. M.Sc. Thesis. Himachal Pradesh Krishi Vishwa Vidyalaya, Palampur (H.P.).
6. Dorman, K.W. and Squillace, A.E. (1974). Genetics of Slash pine. USDA Forest Service Research Paper WO-20, Washington DC. https://doi.org/10.5962/bhl.title.87841
7. Falconer, D.S. and Mackay, F.C. (1996). Introduction to Quantitative Genetics, 4th edition. Longman, London.
8. ICFRE (2004). Indian Council of Forestry Research and Education. Chir pine (Pinus roxburghii), Forest Research Institute, Dehra Dun. (www.frienvis.nic.in/Chirpine. htm).
9. Jayawickrama, K.J.S. (2001). Genetic parameter estimates for radiata pine in New Zealand and New South Wales: a synthesis of results. Silvae Genet., 50(2): 45-53
10. Kedarnath, S. (1984). Forest tree improvement in India. Proc. Indian Academy of Sciences (Plant Science), 93(9): 401-412 https://doi.org/10.1007/BF03053091
11. Matziris, D.I. (2000). Genetic variation and realized genetic gain from Aleppo pine tree improvement. Silvae Genet., 49(1): 5-10
12. Nebgen, R.J. and Lowe, W.J. (1982). Inheritance of growth, branch angle, and specific gravity in three American sycamore populations. Silvae Genet., 31(2/3): 86-89
13. Roy, S.M., Thapliyal, R.C. and Phartyal, S.S. (2004). Seed source variation in cone, seed and seedling characteristic across the natural distribution of Himalayan low level pine Pinus roxburghii Sarg. Silvae Genet., 53(3): 116-123 https://doi.org/10.1515/sg-2004-0021
14. Sahoo, T.K. (1997). Site index curves and stem volume models for Pinus roxburghii Sargent plantations. M.Sc. Thesis. Dr Y S Parmar University of Horticulture and Forestry, Solan.
15. Sharma, R., Kumar, Surinder and Thakur, K.S. (2006). Genetic improvement of Chir pine (Pinus roxburghii Sargent) in India – A Review. Indian For., 132(3): 314–328
16. Sharma, R.S. (2001). Studies on genetic variation in half-sib progeny evaluation in Pinus roxburghii Sarg. Ph.D. Thesis. Dr Y. S. Parmar University of Horticulture and Forestry, Solan.
17. Troup, R.S. (1921). The Silviculture of Indian Trees, Vol III. Clarendon Press, Oxford.
18. Weston, F.M., Peter, S.S. and Gabriel, H. (2008). Genetic parameter estimates for growth and form traits in common Ash (Fraxinus excelsior L.) in a breeding seedling orchard at Little Wittenham in England. New For. 36(3): 225-238 https://doi.org/10.1007/s11056-008-9095-6
19. Wright, J. (1976). Introduction to Forest Genetics. Academic Press, London. https://doi.org/10.1016/B978-0-12-765250-4.50005-8
20. Xu, H.X., Yeh, F.C., Dhir, N.K., Pharis, R.P. and Dancik, B.P. (1997). Genotype by environment interaction and genetic correlation of greenhouse and field performance in Pinus contorta subsp. latifolia. Silvae Genet., 46(2/3): 170-175
21. Zobel, B. and Talbert, J. (1984). Applied Forest Tree Improvement. John Wiley & Sons, New York.