Østrup, E. (1918). Fresh-water Diatoms from Iceland. Part I. <em>In: The Botany of Iceland, vol. II, part I, L.K. Rosenvinge and E. Warming (eds.). Copenhagen,.</em> 2: 1-98, 5 pls. page(s): p. 25; pl. 3, fig. 33 [details]
Kociolek, J.P.; Blanco, S.; Coste, M.; Ector, L.; Liu, Y.; Karthick, B.; Kulikovskiy, M.; Lundholm, N.; Ludwig, T.; Potapova, M.; Rimet, F.; Sabbe, K.; Sala, S.; Sar, E.; Taylor, J.; Van de Vijver, B.; Wetzel, C.E.; Williams, D.M.; Witkowski, A.; Witkowski, J. (2025). DiatomBase. Navicula dicephala f. undulata Østrup, 1918 (1920). Accessed at: https://diatombase.org/aphia.php?p=taxdetails&id=983828 on 2026-07-30
original descriptionØstrup, E. (1918). Fresh-water Diatoms from Iceland. Part I. <em>In: The Botany of Iceland, vol. II, part I, L.K. Rosenvinge and E. Warming (eds.). Copenhagen,.</em> 2: 1-98, 5 pls. page(s): p. 25; pl. 3, fig. 33 [details]