in Améziane-Cominardi, Bourseau & Avocat, in de Ridder & Jangoux [Eds]. Echinoderm research. Proceedings of the second European conference on echinoderms, Brussels, 18-21 September 1989. A.A. Balkema, Rotterdam & Okfield.
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in Améziane-Cominardi, Bourseau & Avocat, in de Ridder & Jangoux [Eds]. Echinoderm research. Proceedings of the second European conference on echinoderms, Brussels, 18-21 September 1989. A.A. Balkema, Rotterdam & Okfield