@InProceedings{Witczak:2002,
  author      = "M. Witczak and J. Korbicz and R. Patton",
  title       = "A bounder-error approach to design unknow input observers",
  booktitle   = "15th Triennial World Congress of the International Federation of Automatic Control",
  address     = "Barcelona, Hiszpania",
  publisher   = "Oxford, Pergamon",
  pages       = "[6] CD-ROM",
  year        = "2002",
}