@book{1993alexandervovinareconstructionofprotoainu,
  title = {A reconstruction of proto-Ainu},
  author = {Alexander Vovin},
  year = {1993},
  url = {http://bvbr.bib-bvb.de:8991/F?func=service\&doc\_library=BVB01\&local\_base=BVB01\&doc\_number=005447868\&sequence=000002\&line\_number=0001\&func\_code=DB\_RECORDS\&service\_type=MEDIA}
}