Reference

Sabine Agatha, M.C. Strüder-Krypke, A. Beran (2004): Morphologic and genetic variability in the marine planktonic ciliate Laboea strobila Lohmann, 1908 (Ciliophora, Oligotrichia), with notes on its ontogenesis – J. Eukaryotic Microbiol. – 51: 267 - 281.