Cvetkoska, A.; Levkov, Z.; Hamilton, P. B. (2014). Surirella subrotunda sp. nov. and Surirella parahelvetica sp. nov., two new diatom (Bacillariophyta) species from Lake Prespa, Macedonia. Phytotaxa. 156(3): 145-155.
<em>Surirella subrotunda sp. nov.</em> and <em>Surirella parahelvetica sp. nov.</em>, two new diatom (Bacillariophyta) species from Lake Prespa, Macedonia