1. Atmospheric heavy metal deposition in the Copenhagen area;Andersen;Environ. Pollut.,1978
2. Phytosociology and Ecology of Cryptogamic Epiphytes;Barkman,1958
3. Radioecologia ed agricoltura nella pianura friulana;Belli;Sicurezza e Protezione,1989
4. The accumulation of heavy metals in soils and plants in Warsaw area exemplified by grasses and mosses;Czarnowska;Pol. J. Sci.,1974
5. Heavy metal content of moss in the region of Consett (northeast England);Ellison;Environ. Pollut.,1976