@techreport{MooreSwartout88,
  author	= {Moore, Johanna D. and Swartout, William R.},
  month		= dec,
  year		= {1988},
  title		= {Explanation in expert systems: a survey},
  number	= {ISI/RR-88-228},
  institution	= {Information Sciences Institute},
  address	= {Marina del Rey, Los Angeles, CA}
}