1. The SNOBOL4 Programming Language;Griswold,1971
2. A theory of discrete patterns and their implementation in SNOBOL4;Gimpel;Commun. ACM,1973
3. Nonlinear pattern theory;Gimpel;Acta Informatica,1975
4. Mathematical semantics of SNOBOL4;Tennent,1973
5. Operational and Denotational Semantics Describing the Matching Process in SNOBOL4;De Bruin,1980