@article{Matkowski:2009,
  author  = "J. Matkowski and M. Wróbel",
  title   = "Representation theorem for locally defined operators in the space of Whitney diffrentiable functions",
  journal = "Manuscripta Mathematica",
  volume  = "Vol. 129",
  number  = "no 4",
  pages   = "437--448",
  year    = "2009",
}