@article{Blaszczak2003,
  author    = {Blaszczak, Joanna},
  title     = {Getting rid of covert movement or getting into trouble},
  isbn      = {3-631-51588-X},
  year      = {2003},
  language  = {en}
}
@article{Blaszczak2003,
  author    = {Blaszczak, Joanna},
  title     = {Negative Polarity items in polish : towards a uniform account},
  isbn      = {3-86057-777-8},
  year      = {2003},
  language  = {en}
}