@article{Korbicz:1991,
  author  = "J. Korbicz and Z. Fathi and W. Ramirez",
  title   = "Fault detection in dynamic systems. State estimation approach",
  journal = "Applied Mathematics and Computer Science",
  volume  = "Vol. 1",
  number  = "no 1",
  pages   = "83--106",
  year    = "1991",
}