1. Syntax-Directed Recognition of Hand-Printed Two-Dimensional Mathematics;Anderson,1967
2. Analysis and Synthesis of Two-Dimensional Patterns Using Picture-Processing Grammars;Chang,1969
3. The Formal Description and Parsing of Pictures;Shaw,1968
4. A Fast Parsing Scheme for Hand-Printed Mathematical Expressions;Martin;MIT Artificial Intelligence Memo. No. 14,1967
5. Sequential formula translation;Samelson,1967