1. Braun E. L. (1950). The Ecology of the Forests of Eastern North America: Their Development, Composition and Distribution. Deciduous Forest of Eastern North America. Mc graw-Hill (New York- Blakiston).
2. Champion, H. G. and Seth, S.K. (1968). A Revised Survey of the Forest Types of India. Manager of Publication, Govt of India, New Delhi, 404pp.
3. Connel, J. H. and Orias, E. (1964). The ecological regulation of species diversity. American Naturalist, 48: 399-414. https://doi.org/10.1086/282335
4. Curtis, J. T. (1959). The Vegetation of Wisconsin. An Ordination of Plant Communities, University Wisconsin Press, Madison Wisconsin, 657pp.
5. Curtis, J. T. and Mc Intosh, R.P. (1950) The interrelation of certain analytic and synthetic Phytosociological characters. Ecology, 31: 434-455. https://doi.org/10.2307/1931497
6. Fischer, A. G. (1960) Latitudinal variation in organic diversity; Evolution, 14: 64-81. https://doi.org/10.1111/j.1558-5646.1960.tb03057.x
7. Jacard, P. (1912). The distribution of the flora in the alpine zone; New Phytol. 11: 37-50. https://doi.org/10.1111/j.1469-8137.1912.tb05611.x
8. Kershaw, K. A. (1973). Quantitative and Dynamics Plant Ecology (2nd Edition), ELBSD & Edward Arnold, London.
9. Misra, R. (1968). Ecology Work Book. Oxford and IBH Publishing, New Delhi.
10. Monk, C.D. (1967). Tree species diversity in eastern deciduous forest with particular reference to North Central Florida Amer. Natur, 101: 173-187 https://doi.org/10.1086/282482
11. Pande P. K, Negi, J. D. S. and Sharma, S. C. (2000). Species diversity, turnover and resources apportionment among various plant species in a western Himalayan Forest. Indian Forester, 126(7) 727-741.
12. Pande, P.K., Negi, J.D.S. and Sharma, S.C. (1996). Plant species diversity and vegetation analysis in moist temperate Himalayan forest. Abstracts First Indian Ecological Congress, New Delhi, 27-31 Dec pp51
13. Puri, G. S. (1960). Indian Forest Ecology. Vol I. Oxford Book and Stationary Co.New Delhi, 318pp.
14. Ralhan, P. K., Saxena, A.K. and Singh, J. S. (1982). Analysis of forest vegetation at and around Nainital in Kumaun Himalaya. Proc. Indian National Sciences Academy, 348: 121-137.
15. Risser, P. G. and Rice, E. I. (1971). Diversity in tree species in Oklahoma upland forests. Ecology, 52: 876-880. https://doi.org/10.2307/1936036
16. Saxena, A.K., Pandey, P. and Singh, J. S. (1982). Biological spectrum and other sturctural functional attributes of the vegetation of Kumaun Himalaya. Vegetatio, 49: 111-119. https://doi.org/10.1007/BF00052766
17. Saxena, A.K. and Singh, J.S. (1982). A Phytosociological analysis of woody species in forest communities of a part of Kumaun Himalaya. Vegetatio, 50:3-22. https://doi.org/10.1007/BF00120674
18. Shannon, C. E. and Wiener, W. (1963). The Mathematical Theory of Communication. University of lllinois Press, Urbana. 117pp.
19. Simpson, E. H. (1949). The Measurement of Diversity. Nature. 163-688. https://doi.org/10.1038/163688a0
20. Singh, J. S and Singh, S. P. (1987). Forest vegetation of the Himalaya; Bot. Rev. 52: 80-192. https://doi.org/10.1007/BF02858183
21. Tewari, J.C. and Singh, S.P. (1981). Vegetation analysis of a forest lying in transitional zone between lower and upper Himalayan moist Temperate forest (ed.) G. S. Paliwal. In: Vegetational Wealth of Himalayas. Puja Publishers, Delhi, pp: 104-119.
22. Whittaker, R.H. (1972). Evolution and measurement of species diversity; Taxon, 21: 213-251. https://doi.org/10.2307/1218190
23. Whittaker, R. H. (1975). Communities and Ecosystems, 2nd ed. Macmillan Publishing Co., New York, Inc. 385pp.