@inbook{19816,
  author       = {{Kleine Büning, Hans and Lettmann, Theodor}},
  booktitle    = {{Lecture Notes in Computer Science}},
  isbn         = {{9783540618638}},
  issn         = {{0302-9743}},
  title        = {{{Learning a representation for optimizable formulas}}},
  doi          = {{10.1007/3-540-61863-5_33}},
  year         = {{1996}},
}