Müller, Werner E.G. (2003). "The origin of metazoan complexity: Porifera as integrated animals". Integrated Computational Biology. 43 (1): 3–10. doi:10.1093/icb/43.1.3. PMID21680404.
Müller, Werner E.G. (2003). "The origin of metazoan complexity: Porifera as integrated animals". Integrated Computational Biology. 43 (1): 3–10. doi:10.1093/icb/43.1.3. PMID21680404.