1. Computer interpretation of English text and picture patterns;Kirsch,1964
2. Labelling schemata and syntactic description of pictures;Narasimhan;Inform. Contr,1964
3. Syntax directed interpretation of classes of pictures;Narasimhan,1966
4. On the description, generation and recognition of classes of pictures;Narasimhan,1969
5. A formal picture description scheme as a basis for picture processing systems;Shaw;Inform. Contr,1969