1. Richard L. Sander,A General Test Data Generator for Cobol, Spring Joint Computer Conference 1962.
2. K. V. Hanford,Automatic Generation of Test Cases, I.B.M. System Journal Vol. 9 No. 4 (1970), 242–257.
3. F. L. DeRemer,Simple LR(k) Grammars, CACM 14 (1971), 453.
4. John Reynolds, See J. C. Earley,An Efficient Context-Free Parsing Algorithm, Thesis (1968), 128, 129, Computer Science Department, Carnegie-Mellon University.
5. F. L. DeRemer,Practical Translators for LR(k), Languages, Project MAC TY-65 MIT.