@TechReport{crary+:recmod,
  author = 	 {Karl Crary and Robert Harper and Sidd Puri},
  title = 	 {What is a Recursive Module?},
  institution =  cmu,
  year = 	 1998,
  number =	 {CMU--CS--98--168},
  address =	 {Pittsburgh, PA},
  month =	 {October},
  note =         {(Also published as Fox Memorandum CMU--CS--FOX--98--03)}
}