1. Gilbert OL (1977) Further studies on the effect of Sulphur dioxide on lichens and bryophytes. New Phytol 69:605–627
2. Le Blanc F, Rao D, Comeau G (1972) The epiphytic vegetation of Popuelus balsamifera and its significance as an air pollution indicator in Sudbury Ontario. Can J Bot 14:519–528
3. Daniels AED (2001) Cololejeunea furcilobulata (Berrie et Jones) Schuster and Heteroscyphus argutus (Reinw et al.) Schiffn. from Mahendragiri Hills of Kanyakumari district of South India. In: Nath V, Asthana AK (eds) Perspectives in Indian Bryology. Bishen Singh Mahendra Pal Singh, Dehra Dun, pp 301–308
4. Chaudhary BL, Sharma TP (2002) Occurrence of epiphytic Stereophyllum Mitt. on Girnar hill Gujarat (India). Phytomorphology 46:273–277
5. Chaudhary BL, Sharma TP (2007) Epiphytic bryophytes of Gujarat. I. India. In: Nath V, Asthana AK (eds) Current Trends in Bryology. Bishen Singh Mahendra Pal Singh, Dehra Dun, pp 287–330