Generalizing Atoms in Constraint Logic. Jr, C. D. P., Frisch, A. M., Allen, J. F., Fikes, R., & Sandewall, E. In KR-91, pages 429-440. 1991.
@incollection{ Page+Frisch/91/Generalizing,
  author    = {C. David Page Jr and Alan M. Frisch and James F. Allen and Richard Fikes and Erik Sandewall},
  title     = {Generalizing Atoms in Constraint Logic},
  booktitle   = {KR-91},
  pages   = {429-440} ,
  year   = {1991}

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