NAGAYA, KAZUHIKO, Faculty of Science, University of the Ryukyus, Senbaru 1, Nishihara, Okinawa 903-0213, Japan

• Zootaxa Vol. 3608 No. 1: 16 Jan. 2013 - Article
  Pattern of stigma numbers as a taxonomic character in some didemnid ascidians (Aplousobranchia: Didemnidae)
  Abstract