@inproceedings{2004-Zoeter-KalmanSmoothing,
  author		= "{Zoeter}, O. and {Ypma}, A. and {Heskes}, T.",
  title			= "{Improved unscented Kalman smoothing for stock volatility estimation}",
  editor		= "{Bassos}, A. and {Principe}, J. and {Larsen}, J. and {Adali}, T. and {Douglas}, S.",
  year			= "2004",
  code			= "icis.NIII-R0452",
  research_group	= "iris",
  class			= "Conference"
}