@Article{Hla94,
  author	= {F. Hlawatsch and R. L. Urbanke},
  title		= {Bilinear time-frequency representations of signals: The shift-scale invariant class},
  journal	= {IEEE Trans. Signal Processing},
  year		= {1994},
  month		= {Feb.},
  volume	= {42},
  number	= {2},
  pages		= {357--366}
}