Reference

Weibo Song, Norbert Wilbert (1997): Morphological studies on some free living ciliates (Ciliophora:Heterotrichida,Hypotrichida) from marine biotopes in Qingdao, China, with descriptions of three new species: Holosticha warreni nov.spec., Tachysoma ovata nov.spec. and T.dragescoi nov.spec.$ – Europ. J. Protistol. – 33: 48 - 62.