@Book{GEMS:2009,
  editor    = {Roberto Basili  and  Marco Pennacchiotti},
  title     = {Proceedings of the Workshop on Geometrical Models of Natural Language Semantics},
  month     = {March},
  year      = {2009},
  address   = {Athens, Greece},
  publisher = {Association for Computational Linguistics},
  url       = {http://www.aclweb.org/anthology/W09-02}
}