Keppel E., Sigovini M. & Tagliapietra D. (2012). A new geographical record of Polycera hedgpethi Er. Marcus, 1964 (Nudibranchia: Polyceridae) and evidence of its established presence in the Mediterranean Sea, with a review of its geographical distribution. Marine Biology Research. 8(10): 969-981. に掲載されているウミウシ