@techreport{Mernik:2003,
  author = {Mernik, Marjan and {\v C}repin{\v s}ek, Matej and Gerli{\v c}, Goran and {\v Z}umer, Viljem and Bryant, Barrett R. and Sprague, Alan},
  title = {Learning Context-Free Grammars using an Evolutionary Approach},
  year = {2003},
  url = {http://www.comp.mq.edu.au/~asloane/plrg/reading/genPar03.pdf}
}

@unpublished{Christiansen:2002,
  author = {Christiansen, Henning},
  title = {CHR Grammmars},
  year = {2002},
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}

@misc{Christiansen:2002b,
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  title = {User's Guide to CHR Grammars},
  year = {2002},
  note = {Visited 28 August 2003},
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}

@inproceedings{Pullum:2001,
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@inproceedings{vanZaanen:2000:2,
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@inproceedings{vanZaanen:2000,
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@book{Borsley:1996,
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@book{Bunt:1996,,
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@techreport{Covington:1994:3,
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@article{McCord:1992,
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@techreport{Carroll:1991,
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@book{Quirk:1985:G,
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@article{Dahl:1980,
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@article{Hudson:1980b,
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@article{Hudson:1980a,
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@book{Quirk:1972,
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@incollection{Baumgaertner:1970,
  author = {Baumg{\"a}rtner, K.},
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@article{Gaifman:1965,
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}