@article{Greenstreet90b,
  author	= "Mark R.\ Greenstreet and Ken Steiglitz",
  title		= "Bubbles can make self-timed pipelines fast",
  journal	= "Journal of {VLSI} and Signal Processing",
  month		= Nov,
  year		= 1990,
  volume	= 2,
  number	= 3,
  pages		= "139--148"
}