@Article{SchonWN:2011,
  author = 	 {Sch\"{o}n, T. B. and Wills, A. and Ninness, B.},
  title = 	 {System Identification of Nonlinear State-Space Models},
  journal = 	 {Automatica},
  year = 	 {2011},
  volume = 	 {47},
  number = 	 {1},
  pages = 	 {39--49},
  month = 	 jan
}