1. Ahmadjian, V., 1993. The Lichen Symbiosis. John Wiley & Sons Inc, New York.
2. Banásová, V., Lackovičová, A., Guttová, A., 2010. Changes in plant species diversity around the copper plant after pollution decline. In: Tepper, G.H. (Ed.) Species diversity and Extinction, Nova Science Publishers, pp. 383–404.
3. Interactions of lichens with heavy metals;Bačkor;Biol. Plantarum,2009
4. Phytosociology and Ecology of Cryptogamic Epiphytes;Barkman,1958
5. Metallophytes and metallicolous vegetation: evolutionary aspects, taxonomic changes and conservational status in Central Europe;Baumbach,2012