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Cavalier-Smith, T.; Allsopp, M.T.E.P.; Chao, E.E.; Boury-Esnault, N.; Vacelet, J. (1996). Sponge phylogeny, animal monophyly, and the origin of the nervous system: 18S rRNA evidence. Canadian Journal of Zoology. 74 (11): 2031-2045.
Cavalier-Smith, T.; Allsopp, M.T.E.P.; Chao, E.E.; Boury-Esnault, N.; Vacelet, J. (1996). Sponge phylogeny, animal monophyly, and the origin of the nervous system: 18S rRNA evidence. Canadian Journal of Zoology. 74 (11): 2031-2045.
