1. Awasthi, D.D. (1963). Some noteworthy addition to the lichen flora of India and Nepal. University of Colorado Studies, Ser. Biol., 10: 18-36.
2. Awasthi, D.D. and Singh, K.P. (1972a). Foliicolous Lichens from Nilgiri hills, India. Proc. Indian Acad. Sci. Pl. Sci., 76: 177-132. https://doi.org/10.1007/BF03050653
3. Awasthi, D.D. and Singh, K.P. (1972b). Four new taxa of Lichens from Palni and Nilgiri Hills, India. Norw. J. Bot., 19 (3-4): 239-242. https://doi.org/10.1007/BF03050653
4. Awasthi, D.D. and Singh, K.P. (1973). A synopsis of the Foliicolous Lichens from the Nilgiri and Palni hills, India. Geophytology 3(1) : 105-150. https://doi.org/10.1007/BF03050653
5. Grube, M. (2001). A simple method to prepare Foliicolous Lichens for anatomical and molecular studies. Lichenologist, 33(6): 547-550. https://doi.org/10.1006/lich.2001.0351
6. Lücking, R.; Farkas, E.E2.; Sérusiaux, E. and Sipman, H.J.M. (2000). Checklist of Foliicolous Lichens and their lichenicolous fungi. Part I: Foliicolous Lichens (Extended Internet Version), A-Z.
7. Lücking, R.; Sérusiaux, E. and V?zda, A. (2005). Phylogeny and Systematics of the Lichen family Gomphillaceae (Ostropales) inferred from cladistic analysis of phenotype data. Lichenologist, 57(2): 123 170. https://doi.org/10.1017/S0024282905014660
8. Makhija, U.B.; Adawakar, B. and Patwardhan, P.G. (1992). The Lichen genus Porina (Family Trichotheliaceae) from India. J. Econ. Tax. Bot., 18(13): 521-545.
9. Pinokiyo, A. and Singh, K.P. (2004). Foliicolous Lichen diversity in India. Phytotaxonomy, 4: 109-121.
10. Pinokiyo, A.; Singh, K.P. and Borthakur, S.K. (2004). Foliicolous species of Porina (Lichens) from Arunachal Pradesh, India. Indian Journal of Forestry, 27(4): 407-416.
11. Pinokiyo, A.; Singh, K.P. and Singh, J.S. (2006). Leaf-colonizing Lichens: biological diversity and ecological implications. Curr. Sci. 90 (4): 509-518.
12. Rodgers, W.; Panwar, A. and Mathur, V.B. (2002). Wildlife Protected Areas in India; A review, WII., Dehra Dun. 2002.
13. Santesson, R. (1952). Foliicolous Lichen I. A revision of Taxonomy of the obligately Foliicolous Lichenised Fungi. Symb. Bot. Upsal. 12(1):1-590.
14. Sethy, P.K. and Patwardhan, P.G. (1987). Some Foliicolous Lichens from the Nicobar and Andaman and Nicobar Islands, India. Biovigyanum, 13(2): 52-59.
15. Singh, A. (1969). On some Foliicolous Lichens from Andaman. Plant Science 1: 97-100.
16. Singh, A. (1970a). Strigula and Raciborskiella species from the Andaman Islands, India. Bryologist, 73: 719-722. https://doi.org/10.2307/3241288
17. Singh, A. (1970b). On Foliicolous species of Porina from Andaman Islands, India. Rev. Bryol.Lichenol, 37:973-992.
18. Singh, A. (1971). Some unrecorded and interesting Pyrernocarpous Lichens from Andaman Islands, India. Bryologist 74(2):195-198. https://doi.org/10.2307/3241838
19. Singh, A. (1973). Some Foliicolous members of Lecideaceae new to Andaman Islands, India. Rev. Bryol. Lichenol., 39: 479-489.
20. Singh, A. (1978). Three Foliicolous Lichen species from Andaman Islands, new to Indian flora. New Botanist, 5: 11-14.
21. Singh, A. (1979). The Lichen flora of India with special reference to Andaman Islands. p. 39-56. In: Khoshoo, T.N. and Nair, P.K. (eds.) Pro. Pl. Res. NBRI, Lucknow.
22. Singh, K.P. (1977). Three new records of Foliicolous Lichens from India. Curr. Sci., 46: 457-458.
23. Singh, K.P. (1978). Lichen genus Echinoplaca Fée, from India. Geophytology, 8: 129-130.
24. Singh, K.P. (1979). Lichen genus Asterothyrium Müll. Arg. in India. Curr. Sci., 48(6):267-268.
25. Singh, K.P. (1996). Lichens. In: A contribution to the Flora of Namdapha, Arunachal Pradesh, A.S. Chauhan and Hajra, P.K. (eds.) p. 23-46. B.S.I., Calcutta.
26. Singh, K.P. and Sinha, G.P. (1997). Lichens. In: Floristic diversity and conservation strategies in India. Mudgal, V. and Hajra, P.K. (eds.), 1:195-234. B.S.I., Calcutta.
27. Singh, K.P. and Pinokiyo, A. (2003). Foliicolous Lichens and their diversity in North-East India. Proc. Natl. Acad. Sci. India, B,73(2): 177-186.
28. Singh, K.P. and Pinokiyo, A. (2004). Four Foliicolous Lichens new to Indian Lichen flora. Geophytology, 33 (1&2): 119-121.
29. Singh, K.P.; Bujarbarua, P.; Pinokiyo, A. and Dixit, P.K. (2004). A preliminary account of Lichens from Mehao Wildlife Sanctuary, Arunachal Pradesh, India. Indian J. Forest., 27(3): 273-278.
30. Sinha, G.P. and Singh, K.P. (1987). Foliicolous Lichens from Nagaland, India. Geophytology, 17(2):174-185.
31. Sinha, G.P. and Singh, K.P. (1992). A new species of Phyllobathelium from Arunachal Pradesh, India. Geophytology, 20(2): 164-165.
32. Upreti, D.K. and Singh, A. (1987). A new species of Porina from Andaman Islands, India. Bot. J. Linn. Soc. 94: 399-402. https://doi.org/10.1111/j.1095-8339.1986.tb01056.x