@inbook{ERMS:SourceID:8564, author = {de Weerdt, W.H. and van Soest, R.W.M.}, pages = {309-321}, title = {A review of north-eastern Atlantic Hemigellius (Niphatidae, Haplosclerida), In: Vacelet, J.; Boury-Esnault, N. (Ed.) (1987). Taxonomy of Porifera from the N.E. Atlantic and Mediterranean Sea. NATO ASI Series G: Ecological sciences}, url = {https://marbef.org/data/aphia.php?p=sourcedetails&id=8564}, volume = {13}, year = {1987} }