@InProceedings{Hla94c,
  author	= {F. Hlawatsch and H. B{\"o}lcskei},
  title		= {Time-frequency analysis of frames},
  booktitle	= {Proc. IEEE-SP Int. Sympos. Time-Frequency Time-Scale Analysis},
  year		= {1994},
  month		= {Oct.},
  address	= {Philadelphia, PA},
  pages		= {52--55}
}