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Principal AFL. (English) Zbl 0198.03102


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[1] Aho, A. V., Nested Stack Automata, J. Assoc. Comput. Mach., 19, 383-406 (1969) · Zbl 0184.28603
[2] Chomsky, N., On Certain Formal Properties of Grammars, Information and Control, 2, 137-167 (1959) · Zbl 0088.10801
[3] Chomsky, N., Context-Free Grammars and Pushdown Storage, MIT Research Laboratory of Electronics, Quarterly Progress Report, 65, 187-194 (1962)
[4] Ginsburg, S.; Greibach, S. A., “Abstract Families of Languages,” Studies in Abstract Families of Languages, Mem. Amer. Math. Soc., Memoir, 87, 41-51 (1969) · Zbl 0194.31402
[5] Ginsburg, S.; Spanier, E. H., Finite-Turn Pushdown Automata, SIAM J. of Control, 4, 429-453 (1966) · Zbl 0147.25302
[6] Ginsburg, S.; Spanier, E. H., Substitution in Families of Languages, Information Sciences, 2, 83-110 (1970) · Zbl 0211.31401
[7] Greibach, S. A., A New Normal-Form Theorem for Context-Free Phrase Structure Grammars, Journal of the Association for Computing Machinery, 12, 42-52 (1965) · Zbl 0135.18404
[8] Greibach, S. A., An Infinite Hierarchy of Context-Free Grammars, J. Assoc. Comput. Mach., 16, 91-106 (1969) · Zbl 0182.02002
[9] Greibach, S. A., Checking Automata and One-Way Stack Languages, J. Comput. System Sci., 3, 196-217 (1969) · Zbl 0174.02702
[10] Greibach, S. A.; Ginsburg, S., Multitape AFA, SDC document TM-738/051/00 (January 1969)
[11] Greibach, S. A.; Hopcroft, J., “Independence of AFL Operations,” Studies in Abstract Families of Languages, Mem. Amer. Math. Soc. Memoir, 87, 33-40 (1969)
[12] Stearns, R. E.; Hartmanis, J.; Lewis, P. M., Hierarchies of Memory Limited Computations, (Proceedings of the Sixth Annual Symposium on Switching Circuit Theory and Logical Design (1965)), 179-190 · Zbl 0229.02033
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