@inproceedings{Minsky75,
  author	= {Minsky, Marvin},
  year		= {1975},
  title		= {A framework for representing knowledge},
  booktitle	= {Theoretical Issues in Natural Language Processing 1},
  note		= {See also: paper of the same name in Winston, P. H. (ed.) \em The Psychology of Computer Vision, (1975) New York: McGraw-Hill. Reprinted in Ronald J. Brachman and Hector J. Levesque (eds.) \em Readings in Knowledge Representation, (1985) Los Altos: Kaufman}
}