1. Group languages;Anisimov;Kibernetika,1971
2. Some algorithmic problems for groups and context-free languages;Anisimov;Kibernetika,1972
3. Zur algebraischen Charakteristik der durch kontext-freie Sprachen definierten Gruppen;Anisimov;Elektron. Informationsverarb. Kybernet.,1975
4. Groups and NTS languages;Autebert;J. Comput. System Sci.,1987
5. Transductions and Context-Free Languages;Berstel,1979