Gupta, S., Khare, R., Bajpai, O., Rai, H., Upreti, D.K., Gupta, R.K. and Sharma, P.K. 2016. Lichen as Bioindicator for Monitoring Environmental Status in Western Himalaya, India. International Journal of Environment. 5, 2 (May 2016), 1–15. DOI:https://doi.org/10.3126/ije.v5i2.15001.