KnowledgeWorks and Prolog User Guide
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C Implementation Notes
C.1
Forward Chainer
C.1.1 Forward Chaining Algorithm
C.1.2 CLOS and the Forward Chainer
C.1.3 Forward Chaining and the Backward Chainer
KnowledgeWorks and Prolog User Guide (Macintosh version) - 22 Dec 2009