@article{Oka2008,
  author    = {Asajiro Oka},
  title     = {Zur Kenntnis der S{\"u}ßwasser-Bryozoenfauna von Japan},
  journal   = {Annotationes zoologicae Japonenses = Nihon-dōbutsugaku-ihō},
  volume    = {12},
  pages     = {117 -- 123},
  year      = {2008},
}