1. Phrase structure languages, finite machines and channel capacity;Banerji;Inform. Con.,1963
2. An iteration theorem for one-counter languages;Boasson,1971
3. On languages accepted in polynomial tim;Book;SIAM J. Computing,1972
4. Quasirealtime languages;Book;Math. Systems Theory,1970
5. Derivatives of regular expressions;Brzozowski;J. Assoc. Comput. Mach.,1964