TY  - BOOK
AU  - Davis,Martin D.
AU  - Sigal,Ron le (j.a.)
AU  - Weyukes,Elaine j.
TI  - Computability, complexity, and languages: fundamentals of theoretical computer science 
SN  - 0122063821
U1  - 004.0151 
PY  - 1994///
CY  - San diego , calif., London
PB  - Academic Press
KW  - computational complexity formal languages
KW  - Machine theory
ER  -