Reference

C. Shao, Weibo Song, X. Hu, H. Ma, M. Zhu, M. Wang (2006): Cell division and morphology of the marine ciliate, Condylostoma spatiosum ozaki and yagiu (Ciliophora, Heterotrichida) based on a chinese population – Europ. J. Protistol. – 42: 9 - 19.