4 literature references for Eurypon lacazei (Topsent, 1891):

Author: Howson, C.M.; Picton, B.E. (Ed.)
Year: 1997
Title: The species directory of the marine fauna and flora of the British Isles and surrounding seas.
Source: Ulster Museum Publication, 276. The Ulster Museum: Belfast, UK. ISBN 0-948150-06-8. vi, 508 (+ cd-rom) pp.
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: Burton, M.
Year: 1956
Title: The sponges of West Africa.
Source: Atlantide Report (Scientific Results of the Danish Expedition to the Coasts of Tropical West Africa, 1945-1946, Copenhagen) 4: 111-147.
Author: Topsent, E.
Year: 1891
Title: Essai sur la faune des spongiaires de Roscoff.
Source: Archives de Zoologie expérimentale et générale (2) 9(4): 523-554,pl. XXII.