KRAMMER, Kurt 2003 Cymbopleura, Delicata, Navicymbula, Gomphocymbellopsis, Afrocymbella In Lange-Bertalot, H. (ed.), Diatoms of Europe. Vol. 4. 529 pp., incl. 164 pls., figs. numbered by taxon number In: H. Lange-Bertalot (ed.), Diatoms of Europe, Diatoms of the European Inland waters and comparable habitats