Tham khảo Địa_y

  1. ↑ F.S. Dobson (2000) Lichens, an illustrated guide to the British and Irish species. Richmond Publishing Co. Ltd., Slough, UK
  2. ↑ Morris J, Purvis W. (2007). Lichens (Life). London: The Natural History Museum. tr. 19. ISBN 0-565-09153-0. 
  3. ↑ Ferry, B.W., Baddeley, M.S. & Hawkworth, D. L. (Editors) (1973) Air Pollution and Lichens. Athlone Press, London.
  4. ↑ Rose C.I., Hawksworth D.L.; Hawksworth (1981). “Lichen recolonization in London's cleaner air”. Nature 289 (5795): 289–292. Bibcode:1981Natur.289..289R. doi:10.1038/289289a0. 
  5. ↑ D.L. Hawksworth and F. Rose(1976) Lichens as pollution monitors. Edward Arnold, Institute of Biology Series, No. 66. 60pp. ISBN 0-7131-2554-3: 0713125551(pbk.)
  6. ↑ Geoffrey Michael Gadd (tháng 3 năm 2010). “Metals, minerals and microbes: geomicrobiology and bioremediation”. Microbiology 156 (Pt 3): 609–643. PMID 20019082. doi:10.1099/mic.0.037143-0.