1. Banyal, H.S., Rani and Devi, N. (2014) "Picrorhiza kurroa Royal Ex Benth exhibits antimalarial activity against Plasmodium berghei vincke and lips, 1948", Asian Journal of Biological Sciences https://doi.org/10.3923/ajbs.2014.72.75
2. Baskin, C.C. and Baskin, J.M. (2014). Seeds: ecology, biogeography, and evolution of dormancy and germination, 2nd edn. Academic Press, London
3. Bhardwaj, R.L. (2014). Effect of growing media on seed germination and seedling growth of Papaya cv. 'Red Lady'. African Journal of Plant Science, 8(4): 283-28 https://doi.org/10.5897/AJPS11.265
4. Billings, W.D. and Mooney, H.A. (1968). The ecology of arctic and alpine plants. Biological Reviews 43: 481-529 https://doi.org/10.1111/j.1469-185X.1968.tb00968.x
5. Bonomi, C., Rossi, G., Mondoni, A. (2005). Seed conservation activities for narrow endemic species in the italian Alps. XVII International Botanical Congress. Vienna, Austria
6. Chaturvedi, G.N. and Singh, R.H. (1966). Jaundice of infectious hepatitis and its treatment with an indigenous drug, Picrorhiza kurrooa. J Res Ind Med 1:1-13
7. Chettri, N., Sharma, E. And Lama, S.D. (2005). Non-timber forest produces utilization, distribution and status in a trekking corridor of Sikkim, India, Lyonia; 8: 89-101
8. Ferrarini, A., Rossi, G., Parolo, G. and Ferloni, M. (2008). Planning low-impact tourist paths within a Site of Community Importance through the optimisation of biological and logistic criteria. Biological Conservation 141: 1067-1077 https://doi.org/10.1016/j.biocon.2008.01.013
9. Forbis, T.A. (2003) Seedling demography in an alpine ecosystem. Amer. J. Bot. 90:1197 https://doi.org/10.3732/ajb.90.8.1197
10. Korner, C. (2003). Alpine plant life: functional plant ecology of high mountain ecosystems, 2nd edn. Springer-Verlag, Berlin
11. Malaisamy, A. and Ravindran, C. (2003). Medicinal Plants: Where we do stand globally? Science Tech Entrepreneur Magazine 2(5): 42-49
12. Mallick, M.N., Singh, M., Parveen, R., Khan, W., Ahmad, S., Najm, M.Z. and Husain, S.A, (2015) HPTLC analysis of bioactivity guided anticancer enriched fraction of hydroalcoholic extract of Picrorhiza kurroa, BioMed Research International https://doi.org/10.1155/2015/513875
13. Malviya, N., Jain S. and Malviya, S. (2011) Antiasthmatic potential of Indigenous medicinal plants, Journal on Complementary Medicine and Drug Discovery, vol. 1(1), 43-50, 2011 https://doi.org/10.5455/spatula.20101223032951
14. Mohammad, N., Dahayat, A. and Mishra, Y. (2016). Effect of seed treatments and potting medium on seed germination and associate parameters in critically endangered Litsea glutinosa (Lour.) Indian Journal of Forestry 39 (2): 111-115
15. Nautiyal, B.P., Parkash, V., Chauhan, R.S., Purohit, H. and Nautiyal, M.C. (2001). Assessment of germinability, productivity and cost benefit analysis of Picrorhiza kurrooa cultivated at lower altitude. Current Science 81(5): 579-585
16. Nautiyal, M.C. and Nautiyal, B.P. (2004). Agrotechniques for High Altitude Medicinal and Aromatic plants. Silver jubille Publication of HAPPRC. Bishen Singh Mahendra Pal singh, Dehradun
17. Nayar, M.P. and Sastri, A.R.K. (1990). Red data plants of India. CSIR Publication, New Delhi
18. Ozenda, P. (1985) La végétation de la chaîne alpine dans l'espace montagnard européen. Masson, Paris
19. Parolo, G. and Rossi, G. (2008). Upward migration of vascular plants following a climate warming trend in the Alps. Basic and Applied Ecology 9: 100-107 https://doi.org/10.1016/j.baae.2007.01.005
20. Purohit, H.C., Nautiyal, B.P. and Nautiyal, M.C. (2008). Interpopulation Varition in P. kurrooa Royle ex. Benth-Step towards Identifying Genetic Variability and Elite Strains for Crop Improvement Study. American J. of Plant Physiol. 3: 154-164 https://doi.org/10.3923/ajpp.2008.154.164
21. Rai, L.K., Prasad, P. and Sharma, E. (2000). Conservation threats to some important medicinal plants of the Sikkim Himalaya. Bio.Conserv., 93:27-53 https://doi.org/10.1016/S0006-3207(99)00116-0
22. Rossi, G., Parolo, G. and Aplin, D. (2007). Ex situ conservation reaches out to save upwardly-mobile plants from extinction. European Native Seed Conservation Newsletter 3: 3-4
23. Rossi, G., Parolo, G. and Ferrarini, A. (2008). A rapid and cost-effective tool for managing habitats of the European Natura 2000 network: a case study in the Italian Alps. Biodiversity and Conservation 18: 1375-1388 https://doi.org/10.1007/s10531-008-9459-4
24. Sah, J.N. and Varshney, V.K. (2013). Chemical constituents of Picrorhiza genus: a review. Am J Essent Oils Nat Prod 1:22-37
25. Sane, S.A., Shakya, N. and Gupta, S. (2011). Immunomodulatory effect of picroliv on the efficacy of paromomycin and miltefosine in combination in experimental visceral leishmaniasis, Experimental Parasitology, 127 : 376-381 https://doi.org/10.1016/j.exppara.2010.09.003
26. Sanjay, S., Banu, S.H. and Chetankumar, M. (2015). "The study of potentiality of Picrorhiza kurroa root proteins to inhibit free radicals and α-amylase enzyme", Asian Journal of pharmaceutical and clinical research, vol. 8(2): 220-225
27. Shimono Y, Kudo G (2005) Comparisons of germination traits of alpine plants between fellfield and snowbed habitats. Ecol. Res. 20:189-197 https://doi.org/10.1007/s11284-004-0031-8
28. Shitiz. K., Pandit, S., Chauhan, R.S. and Sood, H. (2013). Picrosides content in the rhizomes of Picrorhiza kurrooa Royle ex. Benth. traded for herbal drugs in the markets of North India. Int. J. Med. Aromat Plants 3:226-233 Delhi
29. Thuiller, W. (2007). Climate change and the ecologist. Nature 448: 550-552 https://doi.org/10.1038/448550a
30. Tiwari, S.S., Pandey, M.M., Srivastava, S. and Rawat, A.K. (2012) TLC densitometric quantification of picrosides (Picroside-I and Picroside-II) in Picrorhiza kurroa and its substitute Picrorhiza scrophulariiflora and their antioxidant studies, Biomedical Chromatography: BMC, 26 (1) : 61-8 https://doi.org/10.1002/bmc.1626
31. UNEP.(1992). Convention on biological diversity. United Nations Environmental Programme
32. Uniyal, A., Uniyal, S.K. and Rawat, G.S. (2011). Commercial Extraction of Picrorhiza kurrooa Royle ex Benth. in the Western Himalaya. Mountain Research and Development, 31(3): 201-208 https://doi.org/10.1659/MRD-JOURNAL-D-10-00125.1
33. Ved, D.K. and Goraya, G.S. (2008). Demand and supply of Medicinal Plants in India. National Medicinal Plant Board, New Delhi and M/s Bishen Singh Mahendra Pal Singh, Dehradun
34. Wenk, E.H. and Dawson, T.E. (2007). Interspecific differences in seed germination, establishment, and early growth in relation to preferred soil type in an alpine community. Arct. Antarct. Alp. Res. https://doi.org/10.1657/1523-0430(2007)39[165:IDISGE]2.0.CO;2
35. Yegnarayan, R., Dange, S.V., Vaidya, S.D., and Balwani, M. (1982). Study of Picrorhiza kurrooa (PK300) in case of bronchial asthma. Bombay Hosp J 24:81-84
36. Zhang, D.K., Yu, J.J., Li, Y.M., Wei, L.N., Yu, Y., Feng, Y.H. and Wang, X. (2012) A Picrorhiza kurroa derivative, picroliv, attenuates the development of dextran-sulfate-sodium-induced colitis in mice, Mediators of Inflammation, 2012 :751629 https://doi.org/10.1155/2012/751629