Donner, Josef (1965). Ordnung Bdelloidea (Rotatoria, Rädertiere). Bestimmungsbücher zur Bodenfauna Europas, volume 6. Berlin: Akademie Verlag. OCLC6733231. and Segers, Hendrik (2007). Annotated checklist of the rotifers (Phylum Rotifera), with notes on nomenclature, taxonomy and distribution. Zootaxa. 1590: 3—104. Abstract.
Donner, Josef (1965). Ordnung Bdelloidea (Rotatoria, Rädertiere). Bestimmungsbücher zur Bodenfauna Europas, volume 6. Berlin: Akademie Verlag. OCLC6733231. and Segers, Hendrik (2007). Annotated checklist of the rotifers (Phylum Rotifera), with notes on nomenclature, taxonomy and distribution. Zootaxa. 1590: 3—104. Abstract.