1. Biwas, K. (1934). Some foreign weeds and their distribution in India and Burma. Indian For. 60: 861-865

Google Scholar

2. Bruhl, P. (1908). Recent plant immigrants. J. of Asiatic Soc. Bengal II. 4: 603-605

Google Scholar

3. Chatterjee, D. (1947). Influence of East Mediterranean Region Flora on that of India. Sci. & Cult. 13: 9-11.

Google Scholar

4. Higgins, S.I. and Richardson, D.M. (1996). A review of models of alien plant spread. Ecol. Model., 87: 249–265.  https://doi.org/10.1016/0304-3800(95)00022-4

Google Scholar

5. Kashyap, S.R. (1924). Notes on some foreign plants which have recently established themselves about Lahore. J. Indian Bot. Soc. 3: 68-71

Google Scholar

6. Maheshwari, J.K. (1960). The origin and distribution of the naturalized plants of Khandwa plateau, Madhya Pradesh. J. Biol. Sci. 3: 9-19

Google Scholar

7. Maheshwari, J.K. (1961). Weeds and Alien plants of Asirgarh, Madhya Pradesh. J. Bombay Nat. Hist. Sco. 58: 202-215

8. Maheshwari, J.K. (1962). Studies on the naturalized flora of India. In P. Maheshwari, B. M. Johri & I. K. Vasil (eds.) Proc Summer School of Botany, Darjeeling (1960).

Google Scholar

9. Maheshwari, J.K. (1963). The Flora of Delhi, Council of Scientific & Industrial Research, New Delhi

Google Scholar

10. Matthew, K.M. (1969). Exotic Flora of Kodaikanal. Palm Hills Rec. Bot. Surv. India, 20 (1): 1-241

Google Scholar

11. Maheswari, J.K. and Paul, S.R. (1975). The exotic flora of Ranchi. J. Bombay Nat. Hist. Soc. 72 (1): 158-188

Google Scholar

12. Maiti, G.G. and D.N. and Guha Bakshi (1981). Invasion of exotic weeds in West Bengal since 1903: Dicotyledones and monocotyledons. J. Econ. Tax. Bot. 2:, 2-11

Google Scholar

13. Murti, S.K. (1975). Aliens naturalized in the flora of Bilashpur, M. P. Bull. Bot. Surv. India, 17(1-4): 87-96

Google Scholar

14. Nayar, M.P. (1977). Changing pattern of the Indian Flora. Bull Bot. Sarv. India, 19 (1-4): 145-155

Google Scholar

15. Rajagopal, T. and Panigrahi, G. (1965). ‘Aliens’ naturalized in the flora of Allahabad Proc. Nat. Acad. Sci. India Scet. B. 35(1): 25-45

16. Rejmanek, M. and Randall, J.M. (1994). Invasive alien plants in California: 1993 summary and comparison with other areas in North America. Madrono, 41, 161–177

Google Scholar

17. Sharma, B.D. and Pandey, D.S. (1984). Exotic Flora of Allahabad District. Bot. Sur. of Ind., Howrah

Google Scholar

18. Sharma, G.P., Singh, J.S. and Raghubanshi, A.S. (2005). Plant invasions: emerging trends and future implications. Curr. Sci., 88, 726–734

Google Scholar

19. Singh, K.P. et al (2010). State – level inventory of invasive alien plants, their source regions and use potential. Current Science, 99, 1:107-114

Google Scholar

20. Singh M.P., Singh, P. and Singh, A. (2013). Invasive alien plant species aof Varanasi district, their source region and use potential. Ind For, 139(9): 826-832

Google Scholar

21. Srivastava, J.C. (1964). Some tropical American and African weeds that have invaded the state of Bihar. J. Indian Bot. Soc. 43: 102- 112

Google Scholar

22. Srivastava, T.N. (1976). Flora Gorakhpurensis, Today and Tomorrow’s Printers and Publishers, New Delhi.

Google Scholar

23. Sudhi, K.S. (2012). 89 alien species pose a threat to Kerala’s biodiversity. The Hindu (30.05.2012), New Delhi