[1] Bar Hiller Y., Perles M., Shamir E.:
On formal properties of simple phrase structure grammars. Zeitschrift Für Phonetik, Sprachwissenschaft und Kommunikationsforschung, 14 (1961), 143-172.
MR 0151376
[2] Chomsky N.:
Formal properties of grammars. Handbook of Mathematical Psychology. Vol. 2, 1963, 328-418.
Zbl 0156.25303
[3] Chomsky N.:
On certain formal properties of grammars. Information and Control 2 (1959), 137-167.
MR 0105365 |
Zbl 0161.00804
[4] Ginsburg S.:
The Mathematical Theory of Context Free Languaes. McGraw-Hill, 1966.
MR 0211815
[5] Gruska J.:
On Structural Unambiguity of Formal Languages. Czechoslovak Math. J. 15 (1965), 283-294.
MR 0220549 |
Zbl 0133.25503
[6] Irons E.: The Structure and Use of Syntax Directed Compiler. Annual Review in Automatic Programming V. 3 (1963).