1. Bordihn H. (1997). A grammatical approach to the LBA problem. In: Păun Gh., Salomaa A. (eds). New Trends in Formal Languages, number 1218 in LNCS, Springer, Berlin Heidelberg New York, pp. 1–9
2. Bordihn, H. On a grammatical approach to the LBA problem. Technical report 5, Otto-von-Guericke-Universität Magdeburg, Fakultät für Informatik (1999)
3. Bordihn, H., Fernau, H. (1994) Accepting grammars and systems. Technical Report 9/94, Universität Karlsruhe, Fakultät für Informatik
4. Bordihn H., Fernau H. (1994) Accepting grammars with regulation. Int. J. Comput. Math. 53, 1–18
5. Bordihn H., Fernau H. (1996) Accepting grammars and systems via context condition grammars. J. Automata Lang. Combinatorics 1(2): 97–112