@article{Korbicz:1988,
  author  = "J. Korbicz and M. Zgurovsky and A. Novikov",
  title   = "Suboptimal sensors location in the state estimation problem for stochastic non-linear distributed parameter systems",
  journal = "International Journal of Systems Science",
  volume  = "Vol. 19",
  number  = "no 9",
  pages   = "1871--1882",
  year    = "1988",
}