Reference

Marie-Therese Nödl, Alexandra Kerbi, Manfred Günther Walzl, Gerd B. Müller, Heinz Gert Couet, de (2016): The cephalopod arm crown: appendage formation and differentiation in the Hawaiian bobtail squid Euprymna scolopes – Frontiers in Zoology – 2016: 44-0001-44-0016.