1. Single units and sensation: A neuron doctrine for perceptual psychology?;Barlow;Perception,1972
2. The QBKG system: Generating explanations from a non-discrete knowledge representation;Berliner,1982
3. A connectionist context-free parser which is not context-free, but then it is not really connectionist either;Charniak,1987
4. Counterfactual reasoning with direct models;Derthick,1987