1. Quasi-realtime languages;Book;Math. Systems Theory,1970
2. Time- and tape-bounded Turing acceptors and AFLs;Book;J. Comput. System Sci.,1970
3. Abstract families of languages;Ginsburg,1969
4. Images of AFL under certain families of homomorphisms;Ginsburg;SDC Technical Report,1969
5. Formal Languages and their Relation to Automata;Hopcroft,1969