E.  Roniewicz and Morycowa, E., ?Evolution of the Scleractinia in the light of microstructural data?, Courier Forschungsinstitut Senckenberg, vol. 164, pp. 233?240, 1993.

J. - P.  Cuif and Gautret, P., ?Microstructural features of fibrous tissues in the skeletons of some chaetetid sponges?, Courier Forschungsinstitut Senckenberg, vol. 164, pp. 309?315, 1993.