Christer Samuelsson. Using Explanation-Based Learning to Speed up Natural Language Systems.  Master's thesis, The Royal Institute of Technology, Stockholm,   1991.
 @MastersThesis{Samuelsson:1991,
        AUTHOR = {Samuelsson, Christer},
        TITLE = {Using Explanation-Based Learning to Speed up Natural Language Systems},
        YEAR = {1991},
        ADDRESS = {Stockholm},
        SCHOOL = {The Royal Institute of Technology} } 
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