1. Syntactical Analysis;Culik,1971
2. LR-Regular Grammars -- an Extension of LR(/:) Grammars;Culik;J. Computer and System Sciences,1973
3. The Mathematical Theory of Context Free Languages;Ginsburg,1966
4. Compiler Construction for Digital Computers;Grics,1971
5. Top-Down Syntax Analysis;Knuth;Acta Informatica,1970