| author | date | title | journal / publication | Sterrer, W., Salvenmoser, W. and Rieger, R.M. | 2001 | Sperm ultrastructure of Gnathostomaria lutheri (Gnathostomulida: Scleroperalia) I. An hypothesis about the origin of micropodia in scleroperalian sperm. | PSZN - Marine Ecology 22(1-2): 3-11. |
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