TY  - BOOK
AU  - Nijholt,Anton,1946-
TI  - Context-free grammars: covers, normal forms, and parsing
SN  - 3540102450
PY  - 1980///
CY  - Berlin
PB  - Springer-Verlag
KW  - Formal languages
N1  - Bibliography: p.(239)-247
ER  -