1. Anderson, R.C.; Loucks, O.L. and Swain, A.M. (1969). Herbaceous response to canopy cover, light intensity and through fall precipitation in coniferous forests. Ecology, 50:255-263. https://doi.org/10.2307/1934853
2. Anderson, R.C. (1965). Light and precipitation in relation to pine understorey development. M.Sc. Thesis, University of Wisconsin, Madison, Wisconsin. 51 pp.
3. Anon. (1998). Statistical outline of Himachal Pradesh. Directorate of Economic and Statistics. Shimla, H.P., India.
4. Bawa, R. (1986). Structural and functional studies of three semi grassland communities near Shimla. Ph.D. Thesis, H.P. University, Shimla.
5. Conant, S. and Rissar, P.G. (1974). Canopy structure of a tall grass prairie. Journal of Range Management, 27:313-318. https://doi.org/10.2307/3896833
6. Dalai, D. (1997). Productivity of grasses in relation to site quality in Pinus roxburghii plantations. M.Sc. Thesis, Dr. Y.S. Parmar University of Horticulture and Forestry, Nauni, Solan, H.P. India.
7. Dass, B. (1995). System behaviour under Pinus roxburghiiM.Sc. Thesis, Dr. Y.S. Parmar University of Horticulture and Forestry, Nauni, Solan, H.P., India.
8. Daughtry, C.S.T. (1990). Direct measurerments of canopy structure. Remote Sens. Rev.,5:45-60. https://doi.org/10.1080/02757259009532121
9. Guleria, V. (1998). Structure, productivity and quality of grasses under chirpine in mid hills of Himachal Pradesh. M.Sc. Thesis, Dr. Y.S. Parmar University of Horticulture and Forestry, Nauni, Solan, H.P. India.
10. Gupta, B. (1988). Structure, net primary productivity and nutrient cycling in grazed and ungrazed grassland ecosystem at Shardaghat, Shimla (India). Ph.D. Thesis, H.P. University, Shimla.
11. Hughes, T.F.; Tappeiner, J.C. and Newton, M. (1990). Relationship of Pacific madrone sprout growth to productivity of Douglas-fir seedlings and understorey vegetation. Western Journal of Applied Forestry, 5(1):20-24. https://doi.org/10.1093/wjaf/5.1.20
12. Knight, D.H. (1973). Leaf dynamics of shortgrass prairie in Colorado. Ecology,54:891-896. https://doi.org/10.2307/1935685
13. Mall. L.P.; Miser, C.M. and Billore, S.K. (1973). Primary productivity of grassland ecosystems at Ujjain and Ratlam districts of Madhya Pradesh. Progress Report, Indian National Science Academy Project. School of Studies in Botany, Vikram University, Ujjain, India.
14. McNaughton, K.G. and Jarvis, P.G. (1983). Predicting effects of vegetation changes in transpiration and evaporation. In: Water deficits and plant growth. Vol. 7 (T.T. Kozlowski ed.), Academic press, London, United Kingdom, pp. 1-47. https://doi.org/10.1016/B978-0-12-424157-2.50007-0
15. Milner, C. and Hughes, R.E. (1968). Methods for measurements of primary production of grasslands. 1 BP Handbook No. 6 Oxford: Blackwell Scientific Publication.
16. Park, M.S.; Seo, S.; Han. Y.C. and Lel, J.Y. (1986). Studeis on grassland development in forests. Effect on shading degrees on early growth characteristics under winter survival of main grasses. J. Korean Soc. Grassland Sci.,6(1):38-43.
17. Pierce, L.L. and Running, S.W. (1988). Rapid estimation of coniferous forest leaf area index using a portable integrating radiometer. Ecology, 69:1772-1767. https://doi.org/10.2307/1941154
18. Rao, G.R. (1998). Studies on dynamics of herbage layer in pine and khair based natural silvipastoral systems in North West Himalaya. Ph.D. Thesis, Dr. Y.s. Parmar University of Horticulture and Forestry, Nauni, Solan, H.P., India.
19. Simon, J.C. and Lemaire, G. (1987). Tillering and leaf composition, plant biomass and net community production of tropical grassland. Ecological Monograph,44(3):360-375.
20. Singh, J.S. and Yadava, P.S. (1974). Seasonal variation in composition, plant biomass and net community production of tropical grassland. Ecological Monograph, 44(3): 360-375. https://doi.org/10.2307/2937034
21. Trivedi, B.K. (1994). Seasonal variation in composition of grassland communities in district of Jhansddi. Range Mngt. And Agroforestry,15(2):123-129.