Christer Samuelsson. Avoiding Non-Termination in Unification Grammars.  In 
   Yuji Matsumoto editor,  4th International Workshop on Natural Language Understanding and Logic Programming (NLULP4), September 29 - October 1, Pages 4-16, Nara, Japan,   1993.
 @InProceedings{Samuelsson:1993,
        AUTHOR = {Samuelsson, Christer},
        TITLE = {Avoiding Non-Termination in Unification Grammars},
        YEAR = {1993},
        BOOKTITLE = {4th International Workshop on Natural Language Understanding and Logic Programming (NLULP4), September 29 - October 1},
        PAGES = {4-16},
        EDITOR = {Matsumoto, Yuji},
        ADDRESS = {Nara, Japan} } 
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