Marine sponges from Curaçao and other Caribbean islands. Part II. Haplosclerida. Studies on the fauna of Curaçao and other Caribbean islands, 191.
1984
Marine sponges from Curaçao and other Caribbean islands. Part III. Poecilosclerida. Studies on the fauna of Curaçao and other Caribbean islands, 199.
1978
Marine sponges from Curaçao and other Caribbean islands. Part I. Keratosa. Studies on the fauna of Curaçao and other Caribbean islands, 179.
1996
The genus Batzella : a chemosystematic problem. In: Recent advances in sponge biodiversity inventory and documentation (ed. P. Willenz). Bulletin van het Koninklijk Belgisch Instituut voor Natuurwetenschappen, Biologie, 66 suppl.: 89-101.