Levkov, Z., Krstic, S., Metzeltin, D. & Nakov, T. (2007). Diatoms of lakes Prespa and Ohrid, about 500 taxa from ancient lake system. In: H. Lange-Bertalot (ed.), Iconographia Diatomologica. Annotated Diatom Micrographs. Vol. 16. Biogeography, Ecology, Taxonomy. A.R.G. Gantner Verlag K.G., 16: 613 pp.
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Levkov, Z., Krstic, S., Metzeltin, D. & Nakov, T.
2007
Diatoms of lakes Prespa and Ohrid, about 500 taxa from ancient lake system