Stancheva, R. ; Ivanov, P. (2011). Cymbella orientalis var. delicatula var. nov. (Bacillariophyta), a new epilithic stream diatom from Bulgaria. Nova Hedwigia. 93(3-4): 453-464.
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Stancheva, R. ; Ivanov, P.
2011
Cymbella orientalis var. delicatula var. nov. (Bacillariophyta), a new epilithic stream diatom from Bulgaria