1. Purohit, V.K., H.C. Andola, D. Tiwari, Y.M. Bahuguna, S.Z. Haider, K.C. Gairola, K. Arunachalam, 2015. Volatile constituents of endangered species Nardostachys grandiflora DC. rhizomes from Uttarakhand Himalaya (India). Indian J. Nat. Prod. Resour., 6: 134-137.
2. Purohit, V.K., H.C. Andola, S.Z. Haider, D. Tiwari, Y.M. Bahuguna, K.C. Gairola and K. Arunachalam, 2014. National Academy Science Letters Essential Oil Constituents of Angelica glauca Edgew. Roots: An Endangered Species from Uttarakhand Himalaya (India). Nat. Acad. Sci. Lett., .
3. Haider, S.Z., M. Mohan and H.C. Andola, 2014. Constituents of Artemisia indica Willd. from Uttarakhand Himalaya: A source of davanone. Pharmacogn. Res., 6: 257-258.
4. Andola, H.C., V.K. Purohit, R.S. Chauhan and K. Arunachalam, 2014. Standardize quality standards for Aromatic hydrosols Medicinal Plants. Med. Plants-Int. J. Phytomed. Relat. Ind., 6: 161-162.
5. Andola, H.C., K. Arunanchalam and A. Maithani, 2014. Aroma profile of Lavander angustifolia from lower Shivalik Hills of Uttarakhand. Med. Plants Int. J. Phytomed. Relat. Ind., 6: 303-306.
6. Vijay, K.P., H.Ch. Andola, Y.M. Bhuguna and R.S.Chauhan, 2013. Myrica esculenta: Potential wild resource needs conservation priority in India, Himalaya region. Biotech. Today, 3: 31-35.
7. Purohit, V.K., Y.S. Bhaguna, D. Tewari, A. Tewari, H.C. Andola, J.S. Negi and R.S. Chauhan, 2013. Swertia Chirayita (Roxb. Ex ) Fleming Karsecen on the verge on Extraction in the Himalaya region. Curr. Sci., 104: 161-162.
8. Purohit, V.K., A.S. Mishra, S. Singh, H.C. Andola and K.C. Gairola, 2013. Role of Plant Tissue culture in Propagation and Conservation of Threatened Medicinal and Aromatic plants: An Overview from Indian Himalayan Region. In: Plant Biodiversity Utilization and Biotechnology, Bijalwan, A. and C.P. Kala (Eds.)., Aavishkar Publication, Jaipur, Rajasthan, pp: 85-104.
9. Lohani, H., SZ. Haider, N.K. Chauhan., S. Sah and H.C. Andola, 2013. Aroma profile of twoJuniperus species from Alpine region in Uttarakhand. J. Nat. Prod., 6: 38-43.
10. Lohani, H., H.C. Andola, N.K. Chauhan, G. Gwari and U. Bhandari, 2013. Volatile constituents of rose water of Damask rose (Rosa damascena Mill.) from Uttarakhand Himalayas. Med. Plants-Int. J. Phytomed. Relat. Ind., 5: 102-104.
11. Hema, L., N.K. Chauhan and H.Ch. Andola, 2013. Cupressus torulosa is a good substitute of two Selected Juniperus Species for Aroma Potentials. Med. Aromat. Plants, 10.4172/2167-0412.1000122.
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12. Gwari, G., H. Lohani, H.C. Andola, U. Bhandari and N. Chauhan, 2013. Volatile constituents of Saussurea costus cultivated in Uttarakhand Himalayas. India Pharmacogn. Res., 5: 179-182.
13. Chauhan, N.K., H.C. Andola, S. Singh and H. Lohani, 2013. Variability in Essential oil profiling of Rosa damascene cultivar from Uttarakhand Himalaya. Med. Plants, 4: 231-235.
14. Bhatt, I. D., S. Rawat, H.C. Andola, L. Giri, P. Dhyani and R.S. Rawal, 2013. Assessment of nutritional and antioxidant potential of selected vitality strengthening. Himalayan med. plants Int. J. Food Prop., 10.1080/10942912.2012.654563.
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15. Andola, H.C., R.S. Rawal, M.S.M. Rawat and V.K. Purohit, 2013. High-Performance Liquid Chromatographic Method Validation and Determination of Berberine in Different Species of Berberis. In: Plant Biodiversity utilization and Biotechnology, Bijalwan, A. and C.P. Kala (Eds.)., Aavishkar Publication, Jaipur, Rajasthan, pp: 78-84.
16. Alok, M., H.C. Andola and V. Parcha, 2013. Study of essential oil composition of Callistemon citrinus from Dehradun valley (India). UJPAH., 1: 22-24.
17. Vijay K.P., R.S. Chauhan, H. Andola, P. Prasad, M.C. Nautiyal and A.R. Nautiyal, 2012. A life-saving herb,Nardostachys jatamansi DC. Is at risk in the Himalayan region. Curr. Sci., 10: 251-552.
18. Saklani, N., V.K. Purohit, H.C. Andola, M. Rana, R.S. Chauhan and A.R. Nautiyal, 2012. Biological activities ofValeriana wallichii DC. Rev. Med. Plant, 4: 115-120.
19. Purohit, V.K., R.S. Chauhan, H.C. Andola, P. Prasad, M.C. Nautiyal and A.R. Nautiyal, 2012. Survival of the life- saving herbs,Nardostachys grandiflora DC. J. Med. Plant 4: 162-166.
20. Lohani, H.C. Andola, G. Gwari, U. Bhandari and N. Chauhan, 2012. Comparative aroma profile of Mentha arvensis L.corn Mint. from Uttarakhand Himalaya. J. Pharm. Res., 5: 5436-5437.
21. Lohani, H., G. Gwari, H.C. Andola, U. Bhandari and N. Chauhan 2012. A-Pinene rich volatile constituents of Cupressus torulosa D. Don from Uttarakhand Himalaya. Indian J. Pharm. Sci., 74: 278-280.
22. Lohani, H., C. Andola and N. Chauhan, 2012. Variations in Essential oil composition and Biological activity ofHyptis suaveolens Poit: A High Value Aromatic Plant of the Himalaya. Med. Plants J., .
23. Lohani, H., H.C. Andola, U. Bhandari, N. Chauhan and D.S. Pal, 2012. Chemical constituents of volatile oil of Tagetes minuta L. cultivated in Uttarakhand Himalayas. Med. Plant, 4: 42-44.
24. Lohani, H. C. Andola, N. Chauhan and U. Bhandari, 2012. Variations of essential oil composition ofAcorus calamus: From Uttarakhand Himalaya. J. Pharm. Res., 5: 1246-1247.
25. Lohani, H. C. Andola, N Chauhan and U. Bhandari, 2012. constituents of Cinnamomum tamala leaf from Uttarakhand Himalaya Asian Pac. J. Trop. Biomed., 2: 667-669.
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26. Hema L., K.C. Nirpendra, K.S. Kamlesh, H. Zafar and H.Ch. Andola, 2012. Comparative Aroma Profile of Wild and CultivatedChenopodium ambrosioides L from Uttarakhand. J. Essent. Oil Bear. Plants, 15: 657-661.
27. Haider, S.Z., H.C. Andola and M. Mohan, 2012. Constituents of Artemisia gmelinii Weber ex Stechm. from Uttarakhand Himalaya: a source of artemisia ketone. Indian J. Pharm. Sci., 74: 265-268.
28. Gwari, G., U. Bhandari, H.C. Andola, H. Lohani and N. Chauhan, 2012. Aroma profile of Carum carvi (L.) seed cultivated in higher hills of Uttarakhand. Himalaya Indian J. Nat. Prod. Resou., 3: 411-413.
29. Andola, H.C., 2012. GenusBerberis and Berberine HPLC. Active Prod. Nat., 2: 256-264.
30. Andola, H.C., S. Gairola, A. Bhatt, 2012. A need for popularization of Himalayan Berberis species as a source of nutracetucials. Curr. Sci., .
31. Andola, H.C. and V.K. Purohit, 2012. Is Berberis asiatica a good substitute for Berberis aristata in the preparation of Hepatoprotective drugs. Curr. Sci., 103: 1391-1391.
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32. Andola, H.C. 2012. Good laboratory practices for high performance liquid chromatography (HPLC): An overview. Int. Res. J. Pharm. App. Sci., 2: 46-52.
33. Singh, P., H.C. Andola, M.S.M. Rawat, G.J.N. Pant and V.K. Purohit, 2011. Fourier transform infrared (FT-IR) spectroscopy in an-overview. Res. J. Med. Plant, 5: 127-135.
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34. Purohit, V.K., S. Singh, A.R. Nautiyal, P. Prasad, H.C. Andola and K.C. Gairola, 2011. Propagation of Cinnamomum tamala through air layering-A simple and clonal method of propagation. Natl. Acad. Sci. Lett., 34: 253-256.
35. Mohan, M., S.Z. Haider, H.C. Andola and V.K. Purohit, 2011. Essential oils as green pesticides: For sustainable agriculture. Res. J. Pharm. Biol. Chem. Sci., 2: 100-106.
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36. Lohani, N. Chauhan and H.C. Andola, 2011. Variations in Essential oil composition and Biological activity ofHyptis suaveolens Poit:. High value aromatic plants of Himalaya. Med. Plants J., 3: 311-314.
37. Lohani, H., N. Chauhan and H.Ch. Andola, 2011. Chemical composition of the essential oil of two Tanacetum species form Alpine region in Indian Himalaya. Natl. Acad. Sci. Let., .
38. Lohani, H., H.C. Andola, U. Bhandari and N. Chauhan, 2011. HPTLC method validation of reserpine in Rauwolfia serpentine-A High Value medicinal Plant. Researcher, 3: 34-37.
39. Kumar, V., H.C. Andola, H. Lohani and N. Chauhan, 2011. Pharmacological Review on Ocimum sanctum Linnaeus: Queen herbs. J. Pharm. Res., 4: 366-368.
40. Gupta, S., G. Bhaskar and H.C. Andola, 2011. Altitudinal variation in essential oil content in leaves of Zanthoxylum alatum Roxb. A high value aromatic tree from uttarakhand. Res. J. Med. Plant, 5: 348-351.
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41. Giri, L., A. Jugran, S. Rawat, P. Dhyani and H.C Andolaet al., 2011. In vitro propagation, genetic and phytochemical assessment ofHabenaria edgeworthii: An important Astavarga plant. Acta Physiol. Plan., 8: 92-100.
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42. Bhandari, U., N. Chauhan, H.C. Andola and V. Bamola, 2011. Quality evaluation of Caraway oil Cultivated in higher hills of (Carum Carvi. L) Uttarakhand by GC, and GC-MS. Natl. Acad. Sci. Let., 34: 179-181.
43. Andola, H.C., K.S. Gaira, R.S. Rawal, M.S.M. Rawat and I.D. Bhatt, 2011. Influence of environmental factors on production of berberine content in Berberis asiatica Roxb. ex DC in Kumaun West Himalaya. India J. Herbs spices Med. Plants, 10.1080/10496475.2011.626892.
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44. Lohani, H., G. Gwari, H. C. Andola and N. Chauhan, 2010. High Performance liquid Chromatographic Determination of Picroside I & II in Picrorhiza Kurroa Royle ex Benth: A Critically Endangered plant of Himalaya. Med. Plants J., 3: 165-167.
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45. Giri, L., H.C. Andola, V.K. Purohit, M.S.M. Rawat, R.S. Rawal and I.D. Bhatt, 2010. Chromatographic and spectral fingerprinting standardization of traditional medicines: An overview as modern tools. Res. J. Phytochem., 4: 234-241.
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46. Chauhan, N., H. Lohani and H.C. Andola, 2010. Quality evaluation of Stevia rebaudiana cultivated in farmers field. Int. J. Res. Ayurveda Pharm., 5: 1580-1581.
47. Andola, H.C., R.S. Rawal, M.S.M. Rawat, I.D. Bhatt and V.K. Purohit, 2010. Variations of berberine contents in Berberis pseudumbellata: A high value medicinal shrub of west Himalaya, India. Med. Plants, 2: 93-97.
48. Andola, H.C., R.S. Rawal, M.S.M. Rawat, I.D. Bhatt and V.K. Purohit, 2010. Analysis of berberine content using HPTLC fingerprinting of root and bark of three Himalayan Berberis species. Asian J. Biotechnol., 2: 239-245.
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49. Andola, H.C., R.S. Rawal, M.S.M. Rawat and I.D. Bhatt, 2010. Phytopharmacological Overview of Berberine fromBerberis asiatica Roxb.ex.DC. Univ. J. Phytochem. Ayurvedic Heights, 1: 4-7.
50. Andola, H.C., R.S. Rawal and I.D. Bhatt, 2010. Comparative studies on the nutritive and anti-nutritive properties of fruits in selected Berberis species of West Himalaya, India Food Res. Int., 44: 2352-2356.
51. Andola, H.C., K.S. Gaira, R.S. Rawal, M.S. Rawat and I.D. Bhatt, 2010. Habitat dependent variations in berberine content of Berberis asiatica Roxb. Ex DC in Kumaun,West Himalaya. Chem. Biodivers., 7: 415-420.
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52. Andola, H.C. and V.K. Purohit, 2010. Nutritive and mineral value of ripe fruits evaluation of nutritive and mineral value in ripe fruits of Spondias pinnata from two location of Western Himalaya, India. Med. Plants Int. J. Phytomedicines Relat. Ind., 2: 233-236.
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53. Andola, H.C. and V.K. Purohit, 2010. High Performance Thin Layer Chromatography (HPTLC): A modern analytical tool for biological analysis. Nat. Sci., 8: 58-61.
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54. Andola H.C. and V.K. Purohit, 2010. Good Laboratory Practice (GLP) Requirements: An Overview. New York Sci. J., 3: 86-90.
55. Pant. M.A., H.C. Joshi, S.K. Rawal, R.S.U. Dhar, 2008. Nutritive Potentials of Taxillus vestitus (Wall.) Danser: Hitherto underexplored hemiparasitic plants in the west Himalaya Universities. J. Phytochem. Ayurvedic, Heights, 2: 53-57.
56. Andola, H.C., R.S. Rawal and I.D. Bhatt, 2008. Antioxidants in fruits and roots of Berberis asiatica Rox. Ex.DC. A highly valued Himalayan plant. Nat. Acad. Sci. Lett., 31: 337-340.