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2. Lectures on the comparative anatomy and physiology of the invertebrate animals, delivered at the Royal College of Surgeons, in 1843;Owen,1843
3. Die grundlagen des natürlichen systems, der verleichenden anatomie und der phylogenetic;Remane,1952
4. Homology, topology, and typology: the history of modern debates;Rieppel,1994
5. Character definitions and character-state delimitations: the bete noire of phylogenetic inference;Pogue;Cladistics,1990