Krammer, K. 2003. Cymbopleura, Delicata, Navicymbula, Gomphocymbellopsis, Afrocymbella. <em>In</em>: [Lange-Bertalot, H. Ed]. <em>Diatoms of Europe, Diatoms of the European Inland waters and comparable habitats. Vol. 4</em>. Rugell: A.R.G. Gantner Verlag K.G. : 1-529.