@incollection{SauerlandAnderssenYatsushiro2009,
  author    = {Uli Sauerland and Jan Anderssen and Kazuko Yatsushiro},
  title     = {The plural is semantically unmarked},
  url       = {http://www.zas.gwz-berlin.de/mitarb/homepage/sauerland/books/plural.pdf},
  year      = {2009},
}