Malaquias M. A. E., Dodds J. M., Bouchet P. & Reid D. G. (2009). "A molecular phylogeny of the Cephalaspidea sensu lato (Gastropoda: Euthyneura): Architectibranchia redefined and Runcinacea reinstated". Zoologica Scripta38(1): 23-41. doi:10.1111/j.1463-6409.2008.00354.x.