1. A relational model of data for large shared data banks;Codd;Communs Ass. Comput. Mach.,1970
2. Description and theoretical analysis (using schemata) of PLANNER: A language for proving theorems and manipulating models in a robot;Hewitt,1972
3. Transition network grammars for natural language analysis;Woods;Communs Ass. Comput. Mach.,1970
4. Learning structural descriptions from examples;Winston,1970
5. A region-based model of pictorial data for pattern recognition;Peacocke,1978