The AGFL Grammar Work Lab

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[2]  Cornelis H. A. Koster.  Affix Grammars for Natural Languages , 1991, Attribute Grammars, Applications and Systems.

[3]  Cornelis H. A. Koster,et al.  Normalization and Matching in the DORO System , 1999, BCS-IRSG Annual Colloquium on IR Research.

[4]  Russ Abbott.  Program design by informal English descriptions , 1983, CACM.