2 literature references for Desmacella porosa Fristedt, 1887:

Author: Van Soest, R.W.M.
Year: 2001
Title: Porifera, in: Costello, M.J. et al. (Ed.) (2001).
Source: European register of marine species: a check-list of the marine species in Europe and a bibliography of guides to their identification. Collection Patrimoines Naturels, 50:
Author: Fristedt, K.
Year: 1887
Title: Sponges from the Atlantic and Arctic Oceans and the Behring Sea. Vega-Expeditionens Vetenskap.
Source: Iakttagelser (Nordenskiƶld) 4: 401-471, pls 22-31.