
publications
Buizer, D.A.G. 1983. De Nederlandse zakpijpen (Manteldieren) en mantelvisjes. Tunicata, Ascidiacea en Appendicularia. - Wet.Meded. KNNV 158.
Hartog, C. den & G. van der Velde 1987. Invasions by plants and animals into coastal, brackish and fresh water of the Netherlands. - Proc.Kon.Ned.Akad.Wet. C90: 31-37