@Article{chassande-mottin99,
  author	= {Chassande-Mottin, E. and Flandrin, P.},
  title		= {On the time-frequency detection of chirps},
  journal	= {Appl. Comp. Harm. Anal.},
  year		= 1999,
  volume	= 6,
  number	= 9,
  pages		= {252--281}
}