TY  - BOOK
AU  - Ginsburg,Seymour
TI  - Algebraic and automata-theoretic properties of formal languages
SN  - 0444105867
PY  - 1975///
CY  - Amsterdam
PB  - North-Holland
KW  - Formal languages
N1  - Includes indexes; Bibliography : p. 301-305
ER  -