@Conference{artes_spawc99,
  author	= {H. Art\'es and G. Matz and F. Hlawatsch},
  title		= {An unbiased scattering function estimator for fast time-varying channels},
  booktitle	= {Proc.\ 2nd IEEE Workshop on Signal Processing Advances in Wireless Communications},
  year		= {1999},
  month		= {May},
  address	= {Annapolis, MD},
  pages		= {411--414}
}