TY  - BOOK
AU  - Kuich, Werner
AU  - Salomaa, Arto
TI  - SEMIRINGS, AUTOMATA, LANGUAGES
U1  - 511.3 
PY  - 1986///
CY  - Berlin
PB  - Springer-Verlag
KW  - Machine Theory
KW  - Semirings (Mathematics)
KW  - Formal Language
ER  -