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Monnier, O.; Lange-Bertalot, H.; Hoffmann, L. ; Ector, L. (2007). The genera Achnanthidium Kützing and Psammothidium Bukhtiyarova et Round in the family Achnanthidiaceae (Bacillariophyceae): a reappraisal of the differential criteria. Cryptogamie, Algologie. 28(2): 141-158.
Monnier, O.; Lange-Bertalot, H.; Hoffmann, L. ; Ector, L. (2007). The genera Achnanthidium Kützing and Psammothidium Bukhtiyarova et Round in the family Achnanthidiaceae (Bacillariophyceae): a reappraisal of the differential criteria. Cryptogamie, Algologie. 28(2): 141-158.
